1337987640 has 64 divisors (see below), whose sum is σ = 4378872960. Its totient is φ = 324360320.

The previous prime is 1337987633. The next prime is 1337987701. The reversal of 1337987640 is 467897331.

It is a self number, because there is not a number n which added to its sum of digits gives 1337987640.

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, 505494 + ... + 508133.

It is an arithmetic number, because the mean of its divisors is an integer number (68419890).

Almost surely, 2^1337987640 is an apocalyptic number.

1337987640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1337987640 is an abundant number, since it is smaller than the sum of its proper divisors (3040885320).

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

1337987640 is a wasteful number, since it uses less digits than its factorization.

1337987640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013652 (or 1013648 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 48.

The square root of 1337987640 is about 36578.5133650891. The cubic root of 1337987640 is about 1101.9216108438.

The spelling of 1337987640 in words is "one billion, three hundred thirty-seven million, nine hundred eighty-seven thousand, six hundred forty".