1397987368 has 16 divisors (see below), whose sum is σ = 2626246080. Its totient is φ = 697655088.

The previous prime is 1397987363. The next prime is 1397987407. The reversal of 1397987368 is 8637897931.

It is not an unprimeable number, because it can be changed into a prime (1397987363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162880 + ... + 171247.

It is an arithmetic number, because the mean of its divisors is an integer number (164140380).

Almost surely, 2^1397987368 is an apocalyptic number.

It is an amenable number.

1397987368 is a deficient number, since it is larger than the sum of its proper divisors (1228258712).

1397987368 is a wasteful number, since it uses less digits than its factorization.

1397987368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334656 (or 334652 counting only the distinct ones).

The product of its digits is 13716864, while the sum is 61.

The square root of 1397987368 is about 37389.6692683955. The cubic root of 1397987368 is about 1118.1526113804.

The spelling of 1397987368 in words is "one billion, three hundred ninety-seven million, nine hundred eighty-seven thousand, three hundred sixty-eight".