3138717726 has 24 divisors (see below), whose sum is σ = 6813008904. Its totient is φ = 1044323280.

The previous prime is 3138717697. The next prime is 3138717727. The reversal of 3138717726 is 6277178313.

It is a super-2 number, since 2×3138717726² = 19703097927013222152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3138717727) 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, 149545 + ... + 169236.

It is an arithmetic number, because the mean of its divisors is an integer number (283875371).

Almost surely, 2^3138717726 is an apocalyptic number.

3138717726 is an abundant number, since it is smaller than the sum of its proper divisors (3674291178).

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

3138717726 is a wasteful number, since it uses less digits than its factorization.

3138717726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319336 (or 319333 counting only the distinct ones).

The product of its digits is 296352, while the sum is 45.

The square root of 3138717726 is about 56024.2601557575. The cubic root of 3138717726 is about 1464.1449931420.

The spelling of 3138717726 in words is "three billion, one hundred thirty-eight million, seven hundred seventeen thousand, seven hundred twenty-six".