2639238630 has 64 divisors (see below), whose sum is σ = 7472590848. Its totient is φ = 583793280.

The previous prime is 2639238617. The next prime is 2639238659. The reversal of 2639238630 is 368329362.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196197 + ... + 209216.

It is an arithmetic number, because the mean of its divisors is an integer number (116759232).

Almost surely, 2^2639238630 is an apocalyptic number.

2639238630 is an abundant number, since it is smaller than the sum of its proper divisors (4833352218).

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

2639238630 is a wasteful number, since it uses less digits than its factorization.

2639238630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405461.

The product of its (nonzero) digits is 279936, while the sum is 42.

The square root of 2639238630 is about 51373.5207086297. The cubic root of 2639238630 is about 1381.9517698708.

The spelling of 2639238630 in words is "two billion, six hundred thirty-nine million, two hundred thirty-eight thousand, six hundred thirty".