18858423845 has 8 divisors (see below), whose sum is σ = 22633426464. Its totient is φ = 15084527184.

The previous prime is 18858423811. The next prime is 18858423863. The reversal of 18858423845 is 54832485881.

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

It is a cyclic number.

It is not a de Polignac number, because 18858423845 - 2³⁰ = 17784682021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238499 + ... + 307568.

It is an arithmetic number, because the mean of its divisors is an integer number (2829178308).

Almost surely, 2^18858423845 is an apocalyptic number.

It is an amenable number.

18858423845 is a deficient number, since it is larger than the sum of its proper divisors (3775002619).

18858423845 is an equidigital number, since it uses as much as digits as its factorization.

18858423845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552979.

The product of its digits is 9830400, while the sum is 56.

The spelling of 18858423845 in words is "eighteen billion, eight hundred fifty-eight million, four hundred twenty-three thousand, eight hundred forty-five".