2791906731 has 16 divisors (see below), whose sum is σ = 4141303200. Its totient is φ = 1858955904.

The previous prime is 2791906699. The next prime is 2791906739. The reversal of 2791906731 is 1376091972.

It is not a de Polignac number, because 2791906731 - 2⁵ = 2791906699 is a prime.

It is a super-2 number, since 2×2791906731² = 15589486389206212722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2791906739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42066 + ... + 85751.

It is an arithmetic number, because the mean of its divisors is an integer number (258831450).

Almost surely, 2^2791906731 is an apocalyptic number.

2791906731 is a deficient number, since it is larger than the sum of its proper divisors (1349396469).

2791906731 is a wasteful number, since it uses less digits than its factorization.

2791906731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128635 (or 128629 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 2791906731 is about 52838.4966761924. The cubic root of 2791906731 is about 1408.1004434185.

The spelling of 2791906731 in words is "two billion, seven hundred ninety-one million, nine hundred six thousand, seven hundred thirty-one".