2791431556 has 9 divisors (see below), whose sum is σ = 4885190149. Its totient is φ = 1395662944.

The previous prime is 2791431529. The next prime is 2791431557. The reversal of 2791431556 is 6551341972.

The square root of 2791431556 is 52834.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 447322500 + 2344109056 = 21150^2 + 48416^2 .

It is a super-2 number, since 2×2791431556² = 15584180263665162272, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2791431557) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 92460 + ... + 118876.

Almost surely, 2^2791431556 is an apocalyptic number.

2791431556 is the 52834-th square number.

It is an amenable number.

2791431556 is a deficient number, since it is larger than the sum of its proper divisors (2093758593).

2791431556 is an frugal number, since it uses more digits than its factorization.

2791431556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52838 (or 26419 counting only the distinct ones).

The product of its digits is 226800, while the sum is 43.

The cubic root of 2791431556 is about 1408.0205539193.

The spelling of 2791431556 in words is "two billion, seven hundred ninety-one million, four hundred thirty-one thousand, five hundred fifty-six".