973661388 has 24 divisors (see below), whose sum is σ = 2596430592. Its totient is φ = 278188944.

The previous prime is 973661363. The next prime is 973661389. The reversal of 973661388 is 883166379.

It is a self number, because there is not a number n which added to its sum of digits gives 973661388.

It is not an unprimeable number, because it can be changed into a prime (973661389) 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 7 ways as a sum of consecutive naturals, for example, 5795520 + ... + 5795687.

It is an arithmetic number, because the mean of its divisors is an integer number (108184608).

Almost surely, 2^973661388 is an apocalyptic number.

It is an amenable number.

973661388 is an abundant number, since it is smaller than the sum of its proper divisors (1622769204).

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

973661388 is a wasteful number, since it uses less digits than its factorization.

973661388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11591221 (or 11591219 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 51.

The square root of 973661388 is about 31203.5476829158. The cubic root of 973661388 is about 991.1422343139.

The spelling of 973661388 in words is "nine hundred seventy-three million, six hundred sixty-one thousand, three hundred eighty-eight".