2513021863 has 16 divisors (see below), whose sum is σ = 2803743360. Its totient is φ = 2233202400.

The previous prime is 2513021839. The next prime is 2513021881. The reversal of 2513021863 is 3681203152.

It is not a de Polignac number, because 2513021863 - 2⁵ = 2513021831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2513021813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83533 + ... + 109561.

It is an arithmetic number, because the mean of its divisors is an integer number (175233960).

Almost surely, 2^2513021863 is an apocalyptic number.

2513021863 is a deficient number, since it is larger than the sum of its proper divisors (290721497).

2513021863 is a wasteful number, since it uses less digits than its factorization.

2513021863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26238.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2513021863 is about 50130.0495012722. The cubic root of 2513021863 is about 1359.5611803324.

The spelling of 2513021863 in words is "two billion, five hundred thirteen million, twenty-one thousand, eight hundred sixty-three".