18374999040 has 396 divisors, whose sum is σ = 66235204776. Its totient is φ = 4891041792.

The previous prime is 18374999029. The next prime is 18374999059. The reversal of 18374999040 is 4099947381.

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 (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 33592047 + ... + 33592593.

Almost surely, 2^18374999040 is an apocalyptic number.

18374999040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18374999040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33117602388).

18374999040 is an abundant number, since it is smaller than the sum of its proper divisors (47860205736).

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

18374999040 is an frugal number, since it uses more digits than its factorization.

18374999040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596 (or 557 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 18374999040 in words is "eighteen billion, three hundred seventy-four million, nine hundred ninety-nine thousand, forty".