316844021738 has 8 divisors (see below), whose sum is σ = 491654516580. Its totient is φ = 152959182880.

The previous prime is 316844021737. The next prime is 316844021777. The reversal of 316844021738 is 837120448613.

It can be written as a sum of positive squares in 2 ways, for example, as 279315421009 + 37528600729 = 528503^2 + 193723^2 .

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

It is a super-2 number, since 2×316844021738² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 316844021692 and 316844021701.

It is not an unprimeable number, because it can be changed into a prime (316844021737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2731413923 + ... + 2731414038.

Almost surely, 2^316844021738 is an apocalyptic number.

316844021738 is a deficient number, since it is larger than the sum of its proper divisors (174810494842).

316844021738 is a wasteful number, since it uses less digits than its factorization.

316844021738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5462827992.

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 316844021738 in words is "three hundred sixteen billion, eight hundred forty-four million, twenty-one thousand, seven hundred thirty-eight".