718438148738 has 8 divisors (see below), whose sum is σ = 1077662348940. Its totient is φ = 359217365760.

The previous prime is 718438148713. The next prime is 718438148783. The reversal of 718438148738 is 837841834817.

It can be written as a sum of positive squares in 2 ways, for example, as 688855180729 + 29582968009 = 829973^2 + 171997^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×718438148738² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240503 + ... + 1222586.

Almost surely, 2^718438148738 is an apocalyptic number.

718438148738 is a deficient number, since it is larger than the sum of its proper divisors (359224200202).

718438148738 is a wasteful number, since it uses less digits than its factorization.

718438148738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708612.

The product of its digits is 28901376, while the sum is 62.

The spelling of 718438148738 in words is "seven hundred eighteen billion, four hundred thirty-eight million, one hundred forty-eight thousand, seven hundred thirty-eight".