18693862452 has 24 divisors (see below), whose sum is σ = 48465569600. Its totient is φ = 6231287448.

The previous prime is 18693862361. The next prime is 18693862457. The reversal of 18693862452 is 25426839681.

18693862452 is a `hidden beast` number, since 1 + 8 + 6 + 9 + 3 + 8 + 624 + 5 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18693862457) 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, 86545552 + ... + 86545767.

Almost surely, 2^18693862452 is an apocalyptic number.

18693862452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18693862452 is an abundant number, since it is smaller than the sum of its proper divisors (29771707148).

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

18693862452 is a wasteful number, since it uses less digits than its factorization.

18693862452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173091332 (or 173091324 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The spelling of 18693862452 in words is "eighteen billion, six hundred ninety-three million, eight hundred sixty-two thousand, four hundred fifty-two".