1372168644 has 48 divisors (see below), whose sum is σ = 3991766016. Its totient is φ = 356407200.

The previous prime is 1372168613. The next prime is 1372168673. The reversal of 1372168644 is 4468612731.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1372168596 and 1372168605.

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 15 ways as a sum of consecutive naturals, for example, 741592 + ... + 743439.

It is an arithmetic number, because the mean of its divisors is an integer number (83161792).

Almost surely, 2^1372168644 is an apocalyptic number.

1372168644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1372168644 is an abundant number, since it is smaller than the sum of its proper divisors (2619597372).

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

1372168644 is a wasteful number, since it uses less digits than its factorization.

1372168644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485056 (or 1485054 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 1372168644 is about 37042.7947649742. The cubic root of 1372168644 is about 1111.2262626864.

The spelling of 1372168644 in words is "one billion, three hundred seventy-two million, one hundred sixty-eight thousand, six hundred forty-four".