388149816 has 32 divisors (see below), whose sum is σ = 970905600. Its totient is φ = 129312480.

The previous prime is 388149799. The next prime is 388149821. The reversal of 388149816 is 618941883.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 58761 + ... + 65031.

It is an arithmetic number, because the mean of its divisors is an integer number (30340800).

Almost surely, 2^388149816 is an apocalyptic number.

It is an amenable number.

388149816 is an abundant number, since it is smaller than the sum of its proper divisors (582755784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

388149816 is a wasteful number, since it uses less digits than its factorization.

388149816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8859 (or 8855 counting only the distinct ones).

The product of its digits is 331776, while the sum is 48.

The square root of 388149816 is about 19701.5181140947. The cubic root of 388149816 is about 729.4571657188.

The spelling of 388149816 in words is "three hundred eighty-eight million, one hundred forty-nine thousand, eight hundred sixteen".