1388499168 has 48 divisors (see below), whose sum is σ = 4165499520. Its totient is φ = 396713856.

The previous prime is 1388499127. The next prime is 1388499173. The reversal of 1388499168 is 8619948831.

It is a tau number, because it is divible by the number of its divisors (48).

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, 1032438 + ... + 1033781.

It is an arithmetic number, because the mean of its divisors is an integer number (86781240).

Almost surely, 2^1388499168 is an apocalyptic number.

It is an amenable number.

1388499168 is an abundant number, since it is smaller than the sum of its proper divisors (2777000352).

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

1388499168 is a wasteful number, since it uses less digits than its factorization.

1388499168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066239 (or 2066231 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 57.

The square root of 1388499168 is about 37262.5706037573. The cubic root of 1388499168 is about 1115.6172169062.

The spelling of 1388499168 in words is "one billion, three hundred eighty-eight million, four hundred ninety-nine thousand, one hundred sixty-eight".