1357921944 has 48 divisors (see below), whose sum is σ = 3871272600. Its totient is φ = 428817024.

The previous prime is 1357921921. The next prime is 1357921969. The reversal of 1357921944 is 4491297531.

1357921944 is a `hidden beast` number, since 13 + 579 + 21 + 9 + 44 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1357921944.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 494949 + ... + 497684.

Almost surely, 2^1357921944 is an apocalyptic number.

It is an amenable number.

1357921944 is an abundant number, since it is smaller than the sum of its proper divisors (2513350656).

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

1357921944 is a wasteful number, since it uses less digits than its factorization.

1357921944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992664 (or 992657 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 1357921944 is about 36849.9924559015. The cubic root of 1357921944 is about 1107.3670636893.

The spelling of 1357921944 in words is "one billion, three hundred fifty-seven million, nine hundred twenty-one thousand, nine hundred forty-four".