18835928238 has 8 divisors (see below), whose sum is σ = 37671856488. Its totient is φ = 6278642744.

The previous prime is 18835928233. The next prime is 18835928263. The reversal of 18835928238 is 83282953881.

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

18835928238 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18835928233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1569660681 + ... + 1569660692.

It is an arithmetic number, because the mean of its divisors is an integer number (4708982061).

Almost surely, 2^18835928238 is an apocalyptic number.

18835928238 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18835928238 is a wasteful number, since it uses less digits than its factorization.

18835928238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3139321378.

The product of its digits is 6635520, while the sum is 57.

The spelling of 18835928238 in words is "eighteen billion, eight hundred thirty-five million, nine hundred twenty-eight thousand, two hundred thirty-eight".