8215253718 has 64 divisors (see below), whose sum is σ = 18923520000. Its totient is φ = 2329059744.

The previous prime is 8215253707. The next prime is 8215253731. The reversal of 8215253718 is 8173525128.

It is a super-2 number, since 2×8215253718² (a number of 21 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 8215253718.

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, 3668043 + ... + 3670281.

It is an arithmetic number, because the mean of its divisors is an integer number (295680000).

Almost surely, 2^8215253718 is an apocalyptic number.

8215253718 is an abundant number, since it is smaller than the sum of its proper divisors (10708266282).

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

8215253718 is a wasteful number, since it uses less digits than its factorization.

8215253718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2889.

The product of its digits is 134400, while the sum is 42.

The square root of 8215253718 is about 90638.0368167802. The cubic root of 8215253718 is about 2017.7792899176.

The spelling of 8215253718 in words is "eight billion, two hundred fifteen million, two hundred fifty-three thousand, seven hundred eighteen".