18253876194 has 72 divisors (see below), whose sum is σ = 41823032940. Its totient is φ = 5753085696.

The previous prime is 18253876153. The next prime is 18253876217. The reversal of 18253876194 is 49167835281.

18253876194 is a `hidden beast` number, since 18 + 2 + 5 + 3 + 8 + 7 + 619 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17412122025 + 841754169 = 131955^2 + 29013^2 .

It is a super-2 number, since 2×18253876194² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18253876194.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3694894 + ... + 3699830.

Almost surely, 2^18253876194 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18253876194, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20911516470).

18253876194 is an abundant number, since it is smaller than the sum of its proper divisors (23569156746).

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

18253876194 is a wasteful number, since it uses less digits than its factorization.

18253876194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5552 (or 5530 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The spelling of 18253876194 in words is "eighteen billion, two hundred fifty-three million, eight hundred seventy-six thousand, one hundred ninety-four".