1388875164 has 24 divisors (see below), whose sum is σ = 3319751568. Its totient is φ = 451666560.

The previous prime is 1388875157. The next prime is 1388875193. The reversal of 1388875164 is 4615788831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1410967 + ... + 1411950.

It is an arithmetic number, because the mean of its divisors is an integer number (138322982).

Almost surely, 2^1388875164 is an apocalyptic number.

It is an amenable number.

1388875164 is an abundant number, since it is smaller than the sum of its proper divisors (1930876404).

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

1388875164 is a wasteful number, since it uses less digits than its factorization.

1388875164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2822965 (or 2822963 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 51.

The square root of 1388875164 is about 37267.6154858343. The cubic root of 1388875164 is about 1115.7179083010.

The spelling of 1388875164 in words is "one billion, three hundred eighty-eight million, eight hundred seventy-five thousand, one hundred sixty-four".