3138639351 has 4 divisors (see below), whose sum is σ = 4184852472. Its totient is φ = 2092426232.

The previous prime is 3138639323. The next prime is 3138639389. The reversal of 3138639351 is 1539368313.

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

It is a cyclic number.

It is not a de Polignac number, because 3138639351 - 2⁵ = 3138639319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3138639151) 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, 523106556 + ... + 523106561.

It is an arithmetic number, because the mean of its divisors is an integer number (1046213118).

Almost surely, 2^3138639351 is an apocalyptic number.

3138639351 is a deficient number, since it is larger than the sum of its proper divisors (1046213121).

3138639351 is a wasteful number, since it uses less digits than its factorization.

3138639351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046213120.

The product of its digits is 174960, while the sum is 42.

The square root of 3138639351 is about 56023.5606776292. The cubic root of 3138639351 is about 1464.1328062843.

The spelling of 3138639351 in words is "three billion, one hundred thirty-eight million, six hundred thirty-nine thousand, three hundred fifty-one".