2609469931 has 4 divisors (see below), whose sum is σ = 2611360864. Its totient is φ = 2607579000.

The previous prime is 2609469923. The next prime is 2609469953. The reversal of 2609469931 is 1399649062.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2609469931 - 2³ = 2609469923 is a prime.

It is a super-2 number, since 2×2609469931² = 13618666641586289522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2609469911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 943395 + ... + 946156.

It is an arithmetic number, because the mean of its divisors is an integer number (652840216).

Almost surely, 2^2609469931 is an apocalyptic number.

2609469931 is a deficient number, since it is larger than the sum of its proper divisors (1890933).

2609469931 is a wasteful number, since it uses less digits than its factorization.

2609469931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890932.

The product of its (nonzero) digits is 629856, while the sum is 49.

The square root of 2609469931 is about 51082.9710471112. The cubic root of 2609469931 is about 1376.7363067549.

The spelling of 2609469931 in words is "two billion, six hundred nine million, four hundred sixty-nine thousand, nine hundred thirty-one".