1388876258 has 16 divisors (see below), whose sum is σ = 2597379264. Its totient is φ = 541120560.

The previous prime is 1388876171. The next prime is 1388876263. The reversal of 1388876258 is 8526788831.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4509185 + ... + 4509492.

It is an arithmetic number, because the mean of its divisors is an integer number (162336204).

Almost surely, 2^1388876258 is an apocalyptic number.

1388876258 is a deficient number, since it is larger than the sum of its proper divisors (1208503006).

1388876258 is a wasteful number, since it uses less digits than its factorization.

1388876258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9018697.

The product of its digits is 5160960, while the sum is 56.

The square root of 1388876258 is about 37267.6301634542. The cubic root of 1388876258 is about 1115.7182012467.

The spelling of 1388876258 in words is "one billion, three hundred eighty-eight million, eight hundred seventy-six thousand, two hundred fifty-eight".