3138279538 has 4 divisors (see below), whose sum is σ = 4707419310. Its totient is φ = 1569139768.

The previous prime is 3138279527. The next prime is 3138279539. The reversal of 3138279538 is 8359728313.

3138279538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3123356769 + 14922769 = 55887^2 + 3863^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3138279491 and 3138279500.

It is not an unprimeable number, because it can be changed into a prime (3138279539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 784569883 + ... + 784569886.

Almost surely, 2^3138279538 is an apocalyptic number.

3138279538 is a deficient number, since it is larger than the sum of its proper divisors (1569139772).

3138279538 is a wasteful number, since it uses less digits than its factorization.

3138279538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569139771.

The product of its digits is 1088640, while the sum is 49.

The square root of 3138279538 is about 56020.3493205817. The cubic root of 3138279538 is about 1464.0768548468.

The spelling of 3138279538 in words is "three billion, one hundred thirty-eight million, two hundred seventy-nine thousand, five hundred thirty-eight".