18930039297 has 8 divisors (see below), whose sum is σ = 27181594944. Its totient is φ = 11649254928.

The previous prime is 18930039277. The next prime is 18930039307. The reversal of 18930039297 is 79293003981.

It is a happy number.

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

It is not a de Polignac number, because 18930039297 - 2¹¹ = 18930037249 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (18930039277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242692773 + ... + 242692850.

It is an arithmetic number, because the mean of its divisors is an integer number (3397699368).

Almost surely, 2^18930039297 is an apocalyptic number.

It is an amenable number.

18930039297 is a deficient number, since it is larger than the sum of its proper divisors (8251555647).

18930039297 is a wasteful number, since it uses less digits than its factorization.

18930039297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485385639.

The product of its (nonzero) digits is 734832, while the sum is 51.

The spelling of 18930039297 in words is "eighteen billion, nine hundred thirty million, thirty-nine thousand, two hundred ninety-seven".