2689978496 has 32 divisors (see below), whose sum is σ = 5361349500. Its totient is φ = 1344385024.

The previous prime is 2689978463. The next prime is 2689978507. The reversal of 2689978496 is 6948799862.

It can be written as a sum of positive squares in 2 ways, for example, as 2607532096 + 82446400 = 51064^2 + 9080^2 .

It is a tau number, because it is divible by the number of its divisors (32).

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, 456980 + ... + 462828.

Almost surely, 2^2689978496 is an apocalyptic number.

It is an amenable number.

2689978496 is a deficient number, since it is larger than the sum of its proper divisors (2671371004).

2689978496 is an equidigital number, since it uses as much as digits as its factorization.

2689978496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9456 (or 9444 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 68.

The square root of 2689978496 is about 51865.0026125518. The cubic root of 2689978496 is about 1390.7517104427.

The spelling of 2689978496 in words is "two billion, six hundred eighty-nine million, nine hundred seventy-eight thousand, four hundred ninety-six".