18838608730 has 8 divisors (see below), whose sum is σ = 33909495732. Its totient is φ = 7535443488.

The previous prime is 18838608683. The next prime is 18838608751. The reversal of 18838608730 is 3780683881.

It can be written as a sum of positive squares in 2 ways, for example, as 18826309681 + 12299049 = 137209^2 + 3507^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 941930427 + ... + 941930446.

Almost surely, 2^18838608730 is an apocalyptic number.

18838608730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18838608730 is a deficient number, since it is larger than the sum of its proper divisors (15070887002).

18838608730 is a wasteful number, since it uses less digits than its factorization.

18838608730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883860880.

The product of its (nonzero) digits is 1548288, while the sum is 52.

The spelling of 18838608730 in words is "eighteen billion, eight hundred thirty-eight million, six hundred eight thousand, seven hundred thirty".