18249999992 has 32 divisors (see below), whose sum is σ = 39232926720. Its totient is φ = 7796271840.

The previous prime is 18249999983. The next prime is 18249999997. The reversal of 18249999992 is 29999994281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18249999997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506528 + ... + 541359.

It is an arithmetic number, because the mean of its divisors is an integer number (1226028960).

Almost surely, 2^18249999992 is an apocalyptic number.

It is an amenable number.

18249999992 is an abundant number, since it is smaller than the sum of its proper divisors (20982926728).

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

18249999992 is a wasteful number, since it uses less digits than its factorization.

18249999992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048211 (or 1048207 counting only the distinct ones).

The product of its digits is 68024448, while the sum is 71.

The spelling of 18249999992 in words is "eighteen billion, two hundred forty-nine million, nine hundred ninety-nine thousand, nine hundred ninety-two".