18940428327 has 8 divisors (see below), whose sum is σ = 25256318080. Its totient is φ = 12625745400.

The previous prime is 18940428319. The next prime is 18940428359. The reversal of 18940428327 is 72382404981.

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

It is not a de Polignac number, because 18940428327 - 2³ = 18940428319 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 (18940428307) 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, 264427 + ... + 328332.

It is an arithmetic number, because the mean of its divisors is an integer number (3157039760).

Almost surely, 2^18940428327 is an apocalyptic number.

18940428327 is a deficient number, since it is larger than the sum of its proper divisors (6315889753).

18940428327 is a wasteful number, since it uses less digits than its factorization.

18940428327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603413.

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 18940428327 in words is "eighteen billion, nine hundred forty million, four hundred twenty-eight thousand, three hundred twenty-seven".