18046975500 has 384 divisors, whose sum is σ = 62396006400. Its totient is φ = 4493664000.

The previous prime is 18046975493. The next prime is 18046975511. The reversal of 18046975500 is 557964081.

18046975500 is a `hidden beast` number, since 1 + 8 + 0 + 4 + 6 + 97 + 550 + 0 = 666.

It is a super-3 number, since 3×18046975500³ (a number of 32 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 12135757 + ... + 12137243.

It is an arithmetic number, because the mean of its divisors is an integer number (162489600).

Almost surely, 2^18046975500 is an apocalyptic number.

18046975500 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 18046975500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31198003200).

18046975500 is an abundant number, since it is smaller than the sum of its proper divisors (44349030900).

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

18046975500 is a wasteful number, since it uses less digits than its factorization.

18046975500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575 (or 1557 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 18046975500 in words is "eighteen billion, forty-six million, nine hundred seventy-five thousand, five hundred".