2521986738 has 16 divisors (see below), whose sum is σ = 5044550016. Its totient is φ = 840566160.

The previous prime is 2521986673. The next prime is 2521986743. The reversal of 2521986738 is 8376891252.

2521986738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50748 + ... + 87288.

It is an arithmetic number, because the mean of its divisors is an integer number (315284376).

Almost surely, 2^2521986738 is an apocalyptic number.

2521986738 is an abundant number, since it is smaller than the sum of its proper divisors (2522563278).

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

2521986738 is a wasteful number, since it uses less digits than its factorization.

2521986738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48049.

The product of its digits is 1451520, while the sum is 51.

The square root of 2521986738 is about 50219.3860774900. The cubic root of 2521986738 is about 1361.1759469328.

The spelling of 2521986738 in words is "two billion, five hundred twenty-one million, nine hundred eighty-six thousand, seven hundred thirty-eight".