618131474 has 16 divisors (see below), whose sum is σ = 946790208. Its totient is φ = 302560752.

The previous prime is 618131453. The next prime is 618131477. The reversal of 618131474 is 474131816.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (618131477) 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, 43259 + ... + 55745.

It is an arithmetic number, because the mean of its divisors is an integer number (59174388).

Almost surely, 2^618131474 is an apocalyptic number.

618131474 is a deficient number, since it is larger than the sum of its proper divisors (328658734).

618131474 is a wasteful number, since it uses less digits than its factorization.

618131474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13009.

The product of its digits is 16128, while the sum is 35.

The square root of 618131474 is about 24862.2499786323. The cubic root of 618131474 is about 851.8444257735.

The spelling of 618131474 in words is "six hundred eighteen million, one hundred thirty-one thousand, four hundred seventy-four".