18900850428459 has 24 divisors (see below), whose sum is σ = 27925468526592. Its totient is φ = 12313290026160.

The previous prime is 18900850428451. The next prime is 18900850428491. The reversal of 18900850428459 is 95482405800981.

18900850428459 is a `hidden beast` number, since 1 + 8 + 90 + 0 + 8 + 50 + 42 + 8 + 459 = 666.

It is not a de Polignac number, because 18900850428459 - 2³ = 18900850428451 is a prime.

It is a super-2 number, since 2×18900850428459² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18900850428396 and 18900850428405.

It is not an unprimeable number, because it can be changed into a prime (18900850428451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34473627 + ... + 35017604.

It is an arithmetic number, because the mean of its divisors is an integer number (1163561188608).

Almost surely, 2^{18900850428459} is an apocalyptic number.

18900850428459 is a deficient number, since it is larger than the sum of its proper divisors (9024618098133).

18900850428459 is a wasteful number, since it uses less digits than its factorization.

18900850428459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69491927 (or 69491924 counting only the distinct ones).

The product of its (nonzero) digits is 33177600, while the sum is 63.

The spelling of 18900850428459 in words is "eighteen trillion, nine hundred billion, eight hundred fifty million, four hundred twenty-eight thousand, four hundred fifty-nine".