2492993640 has 32 divisors (see below), whose sum is σ = 7478981280. Its totient is φ = 664798272.

The previous prime is 2492993627. The next prime is 2492993641. The reversal of 2492993640 is 463992942.

It is a self number, because there is not a number n which added to its sum of digits gives 2492993640.

It is not an unprimeable number, because it can be changed into a prime (2492993641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10387354 + ... + 10387593.

It is an arithmetic number, because the mean of its divisors is an integer number (233718165).

Almost surely, 2^2492993640 is an apocalyptic number.

2492993640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2492993640 is an abundant number, since it is smaller than the sum of its proper divisors (4985987640).

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

2492993640 is a wasteful number, since it uses less digits than its factorization.

2492993640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20774961 (or 20774957 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 48.

The square root of 2492993640 is about 49929.8872420117. The cubic root of 2492993640 is about 1355.9397428867.

The spelling of 2492993640 in words is "two billion, four hundred ninety-two million, nine hundred ninety-three thousand, six hundred forty".