18839420927 has 8 divisors (see below), whose sum is σ = 20079728352. Its totient is φ = 17613792000.

The previous prime is 18839420903. The next prime is 18839420953. The reversal of 18839420927 is 72902493881.

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

It is a cyclic number.

It is not a de Polignac number, because 18839420927 - 2¹² = 18839416831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18839423927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3666974 + ... + 3672107.

It is an arithmetic number, because the mean of its divisors is an integer number (2509966044).

Almost surely, 2^18839420927 is an apocalyptic number.

18839420927 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

18839420927 is a deficient number, since it is larger than the sum of its proper divisors (1240307425).

18839420927 is a wasteful number, since it uses less digits than its factorization.

18839420927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7339249.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 18839420927 in words is "eighteen billion, eight hundred thirty-nine million, four hundred twenty thousand, nine hundred twenty-seven".