2513001638 has 16 divisors (see below), whose sum is σ = 4333803264. Its totient is φ = 1070550600.

The previous prime is 2513001607. The next prime is 2513001661. The reversal of 2513001638 is 8361003152.

2513001638 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 a self number, because there is not a number n which added to its sum of digits gives 2513001638.

It is a congruent 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, 535088 + ... + 539763.

It is an arithmetic number, because the mean of its divisors is an integer number (270862704).

Almost surely, 2^2513001638 is an apocalyptic number.

2513001638 is a deficient number, since it is larger than the sum of its proper divisors (1820801626).

2513001638 is a wasteful number, since it uses less digits than its factorization.

2513001638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075027.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 2513001638 is about 50129.8477755518. The cubic root of 2513001638 is about 1359.5575330371.

The spelling of 2513001638 in words is "two billion, five hundred thirteen million, one thousand, six hundred thirty-eight".