1373943120 has 80 divisors (see below), whose sum is σ = 4646434752. Its totient is φ = 333076480.

The previous prime is 1373943119. The next prime is 1373943139. The reversal of 1373943120 is 213493731.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257577 + ... + 262856.

Almost surely, 2^1373943120 is an apocalyptic number.

1373943120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1373943120 is an abundant number, since it is smaller than the sum of its proper divisors (3272491632).

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

1373943120 is a wasteful number, since it uses less digits than its factorization.

1373943120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520460 (or 520454 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 1373943120 is about 37066.7387289467. The cubic root of 1373943120 is about 1111.7050655804.

The spelling of 1373943120 in words is "one billion, three hundred seventy-three million, nine hundred forty-three thousand, one hundred twenty".