18027733917 has 8 divisors (see below), whose sum is σ = 24037767424. Its totient is φ = 12018094848.

The previous prime is 18027733897. The next prime is 18027733939. The reversal of 18027733917 is 71933772081.

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

It is not a de Polignac number, because 18027733917 - 2¹⁵ = 18027701149 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 (18027733987) 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, 33213 + ... + 192765.

It is an arithmetic number, because the mean of its divisors is an integer number (3004720928).

Almost surely, 2^18027733917 is an apocalyptic number.

It is an amenable number.

18027733917 is a deficient number, since it is larger than the sum of its proper divisors (6010033507).

18027733917 is a wasteful number, since it uses less digits than its factorization.

18027733917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197219.

The product of its (nonzero) digits is 444528, while the sum is 48.

The spelling of 18027733917 in words is "eighteen billion, twenty-seven million, seven hundred thirty-three thousand, nine hundred seventeen".