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2949630305 = 517281123493
BaseRepresentation
bin1010111111001111…
…1100100101100001
321121120020202002212
42233303330211201
522020101132210
61204404451505
7133044305156
oct25763744541
97546222085
102949630305
111283a979a6
126a39a9b95
13380129a9b
141dda5422d
15123e44805
hexafcfc961

2949630305 has 16 divisors (see below), whose sum is σ = 3761133264. Its totient is φ = 2212976640.

The previous prime is 2949630293. The next prime is 2949630317. The reversal of 2949630305 is 5030369492.

It is an interprime number because it is at equal distance from previous prime (2949630293) and next prime (2949630317).

It can be written as a sum of positive squares in 8 ways, for example, as 2334784 + 2947295521 = 1528^2 + 54289^2 .

It is not a de Polignac number, because 2949630305 - 210 = 2949629281 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37862 + ... + 85631.

It is an arithmetic number, because the mean of its divisors is an integer number (235070829).

Almost surely, 22949630305 is an apocalyptic number.

It is an amenable number.

2949630305 is a deficient number, since it is larger than the sum of its proper divisors (811502959).

2949630305 is a wasteful number, since it uses less digits than its factorization.

2949630305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123796.

The product of its (nonzero) digits is 174960, while the sum is 41.

The square root of 2949630305 is about 54310.4990310345. The cubic root of 2949630305 is about 1434.1322283658.

Adding to 2949630305 its reverse (5030369492), we get a palindrome (7979999797).

The spelling of 2949630305 in words is "two billion, nine hundred forty-nine million, six hundred thirty thousand, three hundred five".

Divisors: 1 5 17 85 281 1405 4777 23885 123493 617465 2099381 10496905 34701533 173507665 589926061 2949630305