11390921974 has 16 divisors (see below), whose sum is σ = 17512959168. Its totient is φ = 5554144512.

The previous prime is 11390921963. The next prime is 11390921999. The reversal of 11390921974 is 47912909311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192699 + ... + 244774.

It is an arithmetic number, because the mean of its divisors is an integer number (1094559948).

Almost surely, 2^11390921974 is an apocalyptic number.

11390921974 is a deficient number, since it is larger than the sum of its proper divisors (6122037194).

11390921974 is a wasteful number, since it uses less digits than its factorization.

11390921974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437799.

The product of its (nonzero) digits is 122472, while the sum is 46.

The spelling of 11390921974 in words is "eleven billion, three hundred ninety million, nine hundred twenty-one thousand, nine hundred seventy-four".