1388684164 has 24 divisors (see below), whose sum is σ = 2829774528. Its totient is φ = 583920480.

The previous prime is 1388684161. The next prime is 1388684173. The reversal of 1388684164 is 4614868831.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1388684161) by changing a digit.

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, 466402 + ... + 469369.

It is an arithmetic number, because the mean of its divisors is an integer number (117907272).

Almost surely, 2^1388684164 is an apocalyptic number.

1388684164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1388684164 is an abundant number, since it is smaller than the sum of its proper divisors (1441090364).

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

1388684164 is a wasteful number, since it uses less digits than its factorization.

1388684164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935835 (or 935833 counting only the distinct ones).

The product of its digits is 884736, while the sum is 49.

The square root of 1388684164 is about 37265.0528511634. The cubic root of 1388684164 is about 1115.6667609420. Note that the first 3 decimals are identical.

The spelling of 1388684164 in words is "one billion, three hundred eighty-eight million, six hundred eighty-four thousand, one hundred sixty-four".