18400091932 has 12 divisors (see below), whose sum is σ = 32501097720. Its totient is φ = 9114064016.

The previous prime is 18400091923. The next prime is 18400091951. The reversal of 18400091932 is 23919000481.

It is a junction number, because it is equal to n+sod(n) for n = 18400091891 and 18400091900.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21495007 + ... + 21495862.

It is an arithmetic number, because the mean of its divisors is an integer number (2708424810).

Almost surely, 2^18400091932 is an apocalyptic number.

It is an amenable number.

18400091932 is a deficient number, since it is larger than the sum of its proper divisors (14101005788).

18400091932 is a wasteful number, since it uses less digits than its factorization.

18400091932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42990980 (or 42990978 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The spelling of 18400091932 in words is "eighteen billion, four hundred million, ninety-one thousand, nine hundred thirty-two".