18870488323 has 4 divisors (see below), whose sum is σ = 19097843688. Its totient is φ = 18643132960.

The previous prime is 18870488317. The next prime is 18870488327. The reversal of 18870488323 is 32388407881.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18870488323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18870488327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113677558 + ... + 113677723.

It is an arithmetic number, because the mean of its divisors is an integer number (4774460922).

Almost surely, 2^18870488323 is an apocalyptic number.

18870488323 is a deficient number, since it is larger than the sum of its proper divisors (227355365).

18870488323 is an equidigital number, since it uses as much as digits as its factorization.

18870488323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227355364.

The product of its (nonzero) digits is 2064384, while the sum is 52.

The spelling of 18870488323 in words is "eighteen billion, eight hundred seventy million, four hundred eighty-eight thousand, three hundred twenty-three".