2790505631 has 4 divisors (see below), whose sum is σ = 2793213264. Its totient is φ = 2787798000.

The previous prime is 2790505609. The next prime is 2790505637. The reversal of 2790505631 is 1365050972.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2790505631 is a prime.

It is a super-2 number, since 2×2790505631² = 15573843353285416322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2790505637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1352270 + ... + 1354331.

It is an arithmetic number, because the mean of its divisors is an integer number (698303316).

Almost surely, 2^2790505631 is an apocalyptic number.

2790505631 is a deficient number, since it is larger than the sum of its proper divisors (2707633).

2790505631 is a wasteful number, since it uses less digits than its factorization.

2790505631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2707632.

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 2790505631 is about 52825.2366866444. The cubic root of 2790505631 is about 1407.8648553610.

The spelling of 2790505631 in words is "two billion, seven hundred ninety million, five hundred five thousand, six hundred thirty-one".