7218253650 has 48 divisors (see below), whose sum is σ = 17908228800. Its totient is φ = 1924119360.

The previous prime is 7218253607. The next prime is 7218253673. The reversal of 7218253650 is 563528127.

It is a junction number, because it is equal to n+sod(n) for n = 7218253599 and 7218253608.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 454036 + ... + 469664.

It is an arithmetic number, because the mean of its divisors is an integer number (373088100).

Almost surely, 2^7218253650 is an apocalyptic number.

7218253650 is an abundant number, since it is smaller than the sum of its proper divisors (10689975150).

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

7218253650 is a wasteful number, since it uses less digits than its factorization.

7218253650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18723 (or 18718 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 7218253650 is about 84960.3063200693. The cubic root of 7218253650 is about 1932.6092166992.

The spelling of 7218253650 in words is "seven billion, two hundred eighteen million, two hundred fifty-three thousand, six hundred fifty".