1373344660 has 24 divisors (see below), whose sum is σ = 3053673000. Its totient is φ = 517023744.

The previous prime is 1373344649. The next prime is 1373344669. The reversal of 1373344660 is 664433731.

It can be written as a sum of positive squares in 4 ways, for example, as 25867396 + 1347477264 = 5086^2 + 36708^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373344669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2019285 + ... + 2019964.

It is an arithmetic number, because the mean of its divisors is an integer number (127236375).

Almost surely, 2^1373344660 is an apocalyptic number.

1373344660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1373344660 is an abundant number, since it is smaller than the sum of its proper divisors (1680328340).

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

1373344660 is a wasteful number, since it uses less digits than its factorization.

1373344660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4039275 (or 4039273 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 37.

The square root of 1373344660 is about 37058.6651135736. The cubic root of 1373344660 is about 1111.5436305531.

The spelling of 1373344660 in words is "one billion, three hundred seventy-three million, three hundred forty-four thousand, six hundred sixty".