18930143295 has 72 divisors (see below), whose sum is σ = 38889766656. Its totient is φ = 8490448512.

The previous prime is 18930143257. The next prime is 18930143303. The reversal of 18930143295 is 59234103981.

It is a happy number.

18930143295 is a `hidden beast` number, since 18 + 9 + 301 + 4 + 329 + 5 = 666.

It is not a de Polignac number, because 18930143295 - 2⁹ = 18930142783 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 18930143295.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 35874 + ... + 197856.

It is an arithmetic number, because the mean of its divisors is an integer number (540135648).

Almost surely, 2^18930143295 is an apocalyptic number.

18930143295 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18930143295 is an abundant number, since it is smaller than the sum of its proper divisors (19959623361).

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

18930143295 is a wasteful number, since it uses less digits than its factorization.

18930143295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162061 (or 162051 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 18930143295 in words is "eighteen billion, nine hundred thirty million, one hundred forty-three thousand, two hundred ninety-five".