618255923 has 4 divisors (see below), whose sum is σ = 628391328. Its totient is φ = 608120520.

The previous prime is 618255917. The next prime is 618255931. The reversal of 618255923 is 329552816.

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 618255923 - 2¹⁰ = 618254899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (618255973) 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, 5067611 + ... + 5067732.

It is an arithmetic number, because the mean of its divisors is an integer number (157097832).

Almost surely, 2^618255923 is an apocalyptic number.

618255923 is a deficient number, since it is larger than the sum of its proper divisors (10135405).

618255923 is a wasteful number, since it uses less digits than its factorization.

618255923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10135404.

The product of its digits is 129600, while the sum is 41.

The square root of 618255923 is about 24864.7526229400. The cubic root of 618255923 is about 851.9015894880.

The spelling of 618255923 in words is "six hundred eighteen million, two hundred fifty-five thousand, nine hundred twenty-three".