18151648992 has 72 divisors (see below), whose sum is σ = 53530580376. Its totient is φ = 6050547072.

The previous prime is 18151648961. The next prime is 18151649029. The reversal of 18151648992 is 29984615181.

18151648992 is a `hidden beast` number, since 1 + 8 + 151 + 6 + 489 + 9 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×18151648992² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 11 ways as a sum of consecutive naturals, for example, 1159383 + ... + 1174934.

It is an arithmetic number, because the mean of its divisors is an integer number (743480283).

Almost surely, 2^18151648992 is an apocalyptic number.

18151648992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18151648992 is an abundant number, since it is smaller than the sum of its proper divisors (35378931384).

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

18151648992 is an equidigital number, since it uses as much as digits as its factorization.

18151648992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2334342 (or 2334322 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 54.

The spelling of 18151648992 in words is "eighteen billion, one hundred fifty-one million, six hundred forty-eight thousand, nine hundred ninety-two".