2630491920 has 120 divisors (see below), whose sum is σ = 10096097856. Its totient is φ = 601254144.

The previous prime is 2630491909. The next prime is 2630491939. The reversal of 2630491920 is 291940362.

2630491920 is a `hidden beast` number, since 2 + 630 + 4 + 9 + 19 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 255922 + ... + 266001.

Almost surely, 2^2630491920 is an apocalyptic number.

2630491920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2630491920 is an abundant number, since it is smaller than the sum of its proper divisors (7465605936).

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

2630491920 is a wasteful number, since it uses less digits than its factorization.

2630491920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521949 (or 521940 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 2630491920 is about 51288.3214777009. The cubic root of 2630491920 is about 1380.4234365379.

The spelling of 2630491920 in words is "two billion, six hundred thirty million, four hundred ninety-one thousand, nine hundred twenty".