718413738 has 32 divisors (see below), whose sum is σ = 1643328000. Its totient is φ = 205106160.

The previous prime is 718413733. The next prime is 718413739. The reversal of 718413738 is 837314817.

It is a happy number.

It is a super-2 number, since 2×718413738² = 1032236597894265288, which 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 718413738.

It is not an unprimeable number, because it can be changed into a prime (718413733) 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, 57253 + ... + 68663.

It is an arithmetic number, because the mean of its divisors is an integer number (51354000).

Almost surely, 2^718413738 is an apocalyptic number.

718413738 is an abundant number, since it is smaller than the sum of its proper divisors (924914262).

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

718413738 is a wasteful number, since it uses less digits than its factorization.

718413738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12922.

The product of its digits is 112896, while the sum is 42.

The square root of 718413738 is about 26803.2411846030. The cubic root of 718413738 is about 895.6222540399.

The spelling of 718413738 in words is "seven hundred eighteen million, four hundred thirteen thousand, seven hundred thirty-eight".