2690156816 has 20 divisors (see below), whose sum is σ = 5263787724. Its totient is φ = 1331760000.

The previous prime is 2690156801. The next prime is 2690156831. The reversal of 2690156816 is 6186510962.

It is an interprime number because it is at equal distance from previous prime (2690156801) and next prime (2690156831).

It can be written as a sum of positive squares in 2 ways, for example, as 1608010000 + 1082146816 = 40100^2 + 32896^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 830735 + ... + 833966.

Almost surely, 2^2690156816 is an apocalyptic number.

It is an amenable number.

2690156816 is a deficient number, since it is larger than the sum of its proper divisors (2573630908).

2690156816 is a wasteful number, since it uses less digits than its factorization.

2690156816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664810 (or 1664804 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 2690156816 is about 51866.7216623530. The cubic root of 2690156816 is about 1390.7824409691.

The spelling of 2690156816 in words is "two billion, six hundred ninety million, one hundred fifty-six thousand, eight hundred sixteen".