738817731 has 12 divisors (see below), whose sum is σ = 1067417208. Its totient is φ = 492436224.

The previous prime is 738817691. The next prime is 738817757. The reversal of 738817731 is 137718837.

It is a de Polignac number, because none of the positive numbers 2^k-738817731 is a prime.

It is a super-2 number, since 2×738817731² = 1091703279279976722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (738817771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71796 + ... + 81438.

It is an arithmetic number, because the mean of its divisors is an integer number (88951434).

Almost surely, 2^738817731 is an apocalyptic number.

738817731 is a deficient number, since it is larger than the sum of its proper divisors (328599477).

738817731 is a wasteful number, since it uses less digits than its factorization.

738817731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18162 (or 18159 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 738817731 is about 27181.2017946227. The cubic root of 738817731 is about 904.0222159386.

The spelling of 738817731 in words is "seven hundred thirty-eight million, eight hundred seventeen thousand, seven hundred thirty-one".