18141291392 has 32 divisors (see below), whose sum is σ = 41303835120. Its totient is φ = 7774838784.

The previous prime is 18141291391. The next prime is 18141291397. The reversal of 18141291392 is 29319214181.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18141291391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10122593 + ... + 10124384.

Almost surely, 2^18141291392 is an apocalyptic number.

It is an amenable number.

18141291392 is an abundant number, since it is smaller than the sum of its proper divisors (23162543728).

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

18141291392 is an equidigital number, since it uses as much as digits as its factorization.

18141291392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20246998 (or 20246986 counting only the distinct ones).

The product of its digits is 31104, while the sum is 41.

The spelling of 18141291392 in words is "eighteen billion, one hundred forty-one million, two hundred ninety-one thousand, three hundred ninety-two".