3138201478 has 4 divisors (see below), whose sum is σ = 4707302220. Its totient is φ = 1569100738.

The previous prime is 3138201467. The next prime is 3138201559. The reversal of 3138201478 is 8741028313.

3138201478 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 is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 784550368 + ... + 784550371.

It is an arithmetic number, because the mean of its divisors is an integer number (1176825555).

Almost surely, 2^3138201478 is an apocalyptic number.

3138201478 is a deficient number, since it is larger than the sum of its proper divisors (1569100742).

3138201478 is a wasteful number, since it uses less digits than its factorization.

3138201478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569100741.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 3138201478 is about 56019.6526051349. The cubic root of 3138201478 is about 1464.0647158404.

The spelling of 3138201478 in words is "three billion, one hundred thirty-eight million, two hundred one thousand, four hundred seventy-eight".