3138555388 has 6 divisors (see below), whose sum is σ = 5492471936. Its totient is φ = 1569277692.

The previous prime is 3138555379. The next prime is 3138555389. The reversal of 3138555388 is 8835558313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3138555389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392319420 + ... + 392319427.

Almost surely, 2^3138555388 is an apocalyptic number.

It is an amenable number.

3138555388 is a deficient number, since it is larger than the sum of its proper divisors (2353916548).

3138555388 is a wasteful number, since it uses less digits than its factorization.

3138555388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784638851 (or 784638849 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 49.

The square root of 3138555388 is about 56022.8113182479. The cubic root of 3138555388 is about 1464.1197502999.

The spelling of 3138555388 in words is "three billion, one hundred thirty-eight million, five hundred fifty-five thousand, three hundred eighty-eight".