1337988561 has 96 divisors (see below), whose sum is σ = 2328883200. Its totient is φ = 676698624.

The previous prime is 1337988541. The next prime is 1337988577. The reversal of 1337988561 is 1658897331.

It is not a de Polignac number, because 1337988561 - 2⁵ = 1337988529 is a prime.

Its product of digits (1088640) is a multiple of the sum of its prime divisors (336).

It is not an unprimeable number, because it can be changed into a prime (1337988521) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8979715 + ... + 8979863.

It is an arithmetic number, because the mean of its divisors is an integer number (24259200).

Almost surely, 2^1337988561 is an apocalyptic number.

It is an amenable number.

1337988561 is a deficient number, since it is larger than the sum of its proper divisors (990894639).

1337988561 is a wasteful number, since it uses less digits than its factorization.

1337988561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343 (or 336 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 51.

The square root of 1337988561 is about 36578.5259544449. The cubic root of 1337988561 is about 1101.9218636786.

The spelling of 1337988561 in words is "one billion, three hundred thirty-seven million, nine hundred eighty-eight thousand, five hundred sixty-one".