18133857880 has 32 divisors (see below), whose sum is σ = 41008310640. Its totient is φ = 7216720000.

The previous prime is 18133857877. The next prime is 18133857881. The reversal of 18133857880 is 8875833181.

It is a super-2 number, since 2×18133857880² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18133857881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1142746 + ... + 1158505.

Almost surely, 2^18133857880 is an apocalyptic number.

18133857880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18133857880 is an abundant number, since it is smaller than the sum of its proper divisors (22874452760).

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

18133857880 is a wasteful number, since it uses less digits than its factorization.

18133857880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2301459 (or 2301455 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 52.

The spelling of 18133857880 in words is "eighteen billion, one hundred thirty-three million, eight hundred fifty-seven thousand, eight hundred eighty".