18540376992 has 72 divisors (see below), whose sum is σ = 52960811904. Its totient is φ = 6152390784.

The previous prime is 18540376969. The next prime is 18540376993. The reversal of 18540376992 is 29967304581.

18540376992 is a `hidden beast` number, since 1 + 8 + 540 + 3 + 7 + 6 + 9 + 92 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (18540376993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80118 + ... + 208565.

It is an arithmetic number, because the mean of its divisors is an integer number (735566832).

It is a 1-persistent number, because it is pandigital, but 2⋅18540376992 = 37080753984 is not.

Almost surely, 2^18540376992 is an apocalyptic number.

18540376992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18540376992 is an abundant number, since it is smaller than the sum of its proper divisors (34420434912).

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

18540376992 is a wasteful number, since it uses less digits than its factorization.

18540376992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288922 (or 288911 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 18540376992 in words is "eighteen billion, five hundred forty million, three hundred seventy-six thousand, nine hundred ninety-two".