3138657842 has 8 divisors (see below), whose sum is σ = 4955775600. Its totient is φ = 1486732644.

The previous prime is 3138657839. The next prime is 3138657853. The reversal of 3138657842 is 2487568313.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41298092 + ... + 41298167.

It is an arithmetic number, because the mean of its divisors is an integer number (619471950).

Almost surely, 2^3138657842 is an apocalyptic number.

3138657842 is a deficient number, since it is larger than the sum of its proper divisors (1817117758).

3138657842 is a wasteful number, since it uses less digits than its factorization.

3138657842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82596280.

The product of its digits is 967680, while the sum is 47.

The square root of 3138657842 is about 56023.7257061685. The cubic root of 3138657842 is about 1464.1356815458.

The spelling of 3138657842 in words is "three billion, one hundred thirty-eight million, six hundred fifty-seven thousand, eight hundred forty-two".