618986023 has 4 divisors (see below), whose sum is σ = 627704208. Its totient is φ = 610267840.

The previous prime is 618985981. The next prime is 618986059. The reversal of 618986023 is 320689816.

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

It is a cyclic number.

It is not a de Polignac number, because 618986023 - 2⁹ = 618985511 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 (618986323) 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, 4358986 + ... + 4359127.

It is an arithmetic number, because the mean of its divisors is an integer number (156926052).

Almost surely, 2^618986023 is an apocalyptic number.

618986023 is a deficient number, since it is larger than the sum of its proper divisors (8718185).

618986023 is an equidigital number, since it uses as much as digits as its factorization.

618986023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8718184.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 618986023 is about 24879.4297161330. The cubic root of 618986023 is about 852.2367951625.

The spelling of 618986023 in words is "six hundred eighteen million, nine hundred eighty-six thousand, twenty-three".