Search a number
-
+
2945002909 = 67310973989
BaseRepresentation
bin1010111110001001…
…0010110110011101
321121020112122111211
42233202102312131
522012410043114
61204121344421
7132660053212
oct25742226635
97536478454
102945002909
111281417302
126a2338111
1337c199794
141dd1abb09
1512382d6c4
hexaf892d9d

2945002909 has 8 divisors (see below), whose sum is σ = 2952807480. Its totient is φ = 2937209856.

The previous prime is 2945002903. The next prime is 2945002927. The reversal of 2945002909 is 9092005492.

It can be written as a sum of positive squares in 4 ways, for example, as 93122500 + 2851880409 = 9650^2 + 53403^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2945002909 - 215 = 2944970141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2945002903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 736287 + ... + 740275.

It is an arithmetic number, because the mean of its divisors is an integer number (369100935).

Almost surely, 22945002909 is an apocalyptic number.

It is an amenable number.

2945002909 is a deficient number, since it is larger than the sum of its proper divisors (7804571).

2945002909 is a wasteful number, since it uses less digits than its factorization.

2945002909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5759.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 2945002909 is about 54267.8810070930. The cubic root of 2945002909 is about 1433.3818777081.

The spelling of 2945002909 in words is "two billion, nine hundred forty-five million, two thousand, nine hundred nine".

Divisors: 1 673 1097 3989 738281 2684597 4375933 2945002909