18975281579827 has 8 divisors (see below), whose sum is σ = 19073850664064. Its totient is φ = 18876715089408.

The previous prime is 18975281579743. The next prime is 18975281579857. The reversal of 18975281579827 is 72897518257981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18975281579827 - 2¹⁵ = 18975281547059 is a prime.

It is a super-2 number, since 2×18975281579827² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18975281579857) 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, 14998633 + ... + 16214485.

It is an arithmetic number, because the mean of its divisors is an integer number (2384231333008).

Almost surely, 2^{18975281579827} is an apocalyptic number.

18975281579827 is a deficient number, since it is larger than the sum of its proper divisors (98569084237).

18975281579827 is a wasteful number, since it uses less digits than its factorization.

18975281579827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296909.

The product of its digits is 1422489600, while the sum is 79.

The spelling of 18975281579827 in words is "eighteen trillion, nine hundred seventy-five billion, two hundred eighty-one million, five hundred seventy-nine thousand, eight hundred twenty-seven".