18049693192 has 16 divisors (see below), whose sum is σ = 34067304000. Its totient is φ = 8965078800.

The previous prime is 18049693171. The next prime is 18049693213. The reversal of 18049693192 is 29139694081.

It is an interprime number because it is at equal distance from previous prime (18049693171) and next prime (18049693213).

It is a super-2 number, since 2×18049693192² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7469692 + ... + 7472107.

It is an arithmetic number, because the mean of its divisors is an integer number (2129206500).

Almost surely, 2^18049693192 is an apocalyptic number.

It is an amenable number.

18049693192 is a deficient number, since it is larger than the sum of its proper divisors (16017610808).

18049693192 is a wasteful number, since it uses less digits than its factorization.

18049693192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14941956 (or 14941952 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 52.

The spelling of 18049693192 in words is "eighteen billion, forty-nine million, six hundred ninety-three thousand, one hundred ninety-two".