718064538 has 16 divisors (see below), whose sum is σ = 1439983776. Its totient is φ = 238712400.

The previous prime is 718064521. The next prime is 718064551. The reversal of 718064538 is 835460817.

It is a self number, because there is not a number n which added to its sum of digits gives 718064538.

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, 158188 + ... + 162663.

It is an arithmetic number, because the mean of its divisors is an integer number (89998986).

Almost surely, 2^718064538 is an apocalyptic number.

718064538 is an abundant number, since it is smaller than the sum of its proper divisors (721919238).

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

718064538 is a wasteful number, since it uses less digits than its factorization.

718064538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321229.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 718064538 is about 26796.7262552723. The cubic root of 718064538 is about 895.4771185553.

The spelling of 718064538 in words is "seven hundred eighteen million, sixty-four thousand, five hundred thirty-eight".