3138679278 has 24 divisors (see below), whose sum is σ = 7771968048. Its totient is φ = 896765472.

The previous prime is 3138679261. The next prime is 3138679283. The reversal of 3138679278 is 8729768313.

It is a super-2 number, since 2×3138679278² = 19702615220293202568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12454951 + ... + 12455202.

It is an arithmetic number, because the mean of its divisors is an integer number (323832002).

Almost surely, 2^3138679278 is an apocalyptic number.

3138679278 is an abundant number, since it is smaller than the sum of its proper divisors (4633288770).

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

3138679278 is a wasteful number, since it uses less digits than its factorization.

3138679278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24910168 (or 24910165 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 3138679278 is about 56023.9170176452. The cubic root of 3138679278 is about 1464.1390147265.

The spelling of 3138679278 in words is "three billion, one hundred thirty-eight million, six hundred seventy-nine thousand, two hundred seventy-eight".