1375236864 has 108 divisors (see below), whose sum is σ = 3979901016. Its totient is φ = 456708096.

The previous prime is 1375236859. The next prime is 1375236871. The reversal of 1375236864 is 4686325731.

1375236864 is a `hidden beast` number, since 1 + 3 + 7 + 523 + 68 + 64 = 666.

It is a super-3 number, since 3×1375236864³ (a number of 28 digits) contains 333 as substring.

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 11 ways as a sum of consecutive naturals, for example, 720199 + ... + 722105.

Almost surely, 2^1375236864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1375236864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1989950508).

1375236864 is an abundant number, since it is smaller than the sum of its proper divisors (2604664152).

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

1375236864 is a wasteful number, since it uses less digits than its factorization.

1375236864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2242 (or 2225 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 1375236864 is about 37084.1861714667. The cubic root of 1375236864 is about 1112.0538938391.

The spelling of 1375236864 in words is "one billion, three hundred seventy-five million, two hundred thirty-six thousand, eight hundred sixty-four".