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2986310905 = 52332563357
BaseRepresentation
bin1011000111111111…
…0111110011111001
321201010021022102121
42301333313303321
522103443422110
61212155001241
7134001136534
oct26177676371
97633238377
102986310905
1112a2770646
126b4139221
13387900796
14204881a1b
1512728ccda
hexb1ff7cf9

2986310905 has 8 divisors (see below), whose sum is σ = 3598954632. Its totient is φ = 2378794368.

The previous prime is 2986310897. The next prime is 2986310953. The reversal of 2986310905 is 5090136892.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 492706809 + 2493604096 = 22197^2 + 49936^2 .

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 2986310905 - 23 = 2986310897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1280514 + ... + 1282843.

It is an arithmetic number, because the mean of its divisors is an integer number (449869329).

Almost surely, 22986310905 is an apocalyptic number.

It is an amenable number.

2986310905 is a deficient number, since it is larger than the sum of its proper divisors (612643727).

2986310905 is a wasteful number, since it uses less digits than its factorization.

2986310905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2563595.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 2986310905 is about 54647.1491022176. The cubic root of 2986310905 is about 1440.0525483975.

The spelling of 2986310905 in words is "two billion, nine hundred eighty-six million, three hundred ten thousand, nine hundred five".

Divisors: 1 5 233 1165 2563357 12816785 597262181 2986310905