2691315954 has 24 divisors (see below), whose sum is σ = 5873753340. Its totient is φ = 890556288.

The previous prime is 2691315941. The next prime is 2691315961. The reversal of 2691315954 is 4595131962.

2691315954 is a `hidden beast` number, since 26 + 9 + 1 + 31 + 595 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2644324929 + 46991025 = 51423^2 + 6855^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 543219 + ... + 548150.

Almost surely, 2^2691315954 is an apocalyptic number.

2691315954 is an abundant number, since it is smaller than the sum of its proper divisors (3182437386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2691315954 is a wasteful number, since it uses less digits than its factorization.

2691315954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091514 (or 1091511 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 2691315954 is about 51877.8946565876. The cubic root of 2691315954 is about 1390.9821662887.

The spelling of 2691315954 in words is "two billion, six hundred ninety-one million, three hundred fifteen thousand, nine hundred fifty-four".