18245089278 has 48 divisors (see below), whose sum is σ = 42603069600. Its totient is φ = 5609760192.

The previous prime is 18245089241. The next prime is 18245089279. The reversal of 18245089278 is 87298054281.

18245089278 is a `hidden beast` number, since 182 + 450 + 8 + 9 + 2 + 7 + 8 = 666.

It is a super-2 number, since 2×18245089278² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18245089279) 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, 299500 + ... + 355232.

It is an arithmetic number, because the mean of its divisors is an integer number (887563950).

Almost surely, 2^18245089278 is an apocalyptic number.

18245089278 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18245089278 is an abundant number, since it is smaller than the sum of its proper divisors (24357980322).

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

18245089278 is a wasteful number, since it uses less digits than its factorization.

18245089278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57153 (or 57150 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 54.

The spelling of 18245089278 in words is "eighteen billion, two hundred forty-five million, eighty-nine thousand, two hundred seventy-eight".