18389717053 has 8 divisors (see below), whose sum is σ = 18477740736. Its totient is φ = 18301879200.

The previous prime is 18389717033. The next prime is 18389717069. The reversal of 18389717053 is 35071798381.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18389717053 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 (18389717033) 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, 153993 + ... + 245953.

It is an arithmetic number, because the mean of its divisors is an integer number (2309717592).

Almost surely, 2^18389717053 is an apocalyptic number.

It is an amenable number.

18389717053 is a deficient number, since it is larger than the sum of its proper divisors (88023683).

18389717053 is an equidigital number, since it uses as much as digits as its factorization.

18389717053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92915.

The product of its (nonzero) digits is 1270080, while the sum is 52.

The spelling of 18389717053 in words is "eighteen billion, three hundred eighty-nine million, seven hundred seventeen thousand, fifty-three".