2609906931 has 12 divisors (see below), whose sum is σ = 3840995808. Its totient is φ = 1707108624.

The previous prime is 2609906917. The next prime is 2609906969. The reversal of 2609906931 is 1396099062.

It is a happy number.

2609906931 is a `hidden beast` number, since 2 + 609 + 9 + 0 + 6 + 9 + 31 = 666.

It is not a de Polignac number, because 2609906931 - 2¹¹ = 2609904883 is a prime.

It is a super-3 number, since 3×2609906931³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (2609906911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2735275 + ... + 2736228.

It is an arithmetic number, because the mean of its divisors is an integer number (320082984).

Almost surely, 2^2609906931 is an apocalyptic number.

2609906931 is a deficient number, since it is larger than the sum of its proper divisors (1231088877).

2609906931 is a wasteful number, since it uses less digits than its factorization.

2609906931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5471562 (or 5471559 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The square root of 2609906931 is about 51087.2482230155. The cubic root of 2609906931 is about 1376.8131550805.

The spelling of 2609906931 in words is "two billion, six hundred nine million, nine hundred six thousand, nine hundred thirty-one".