618731427 has 16 divisors (see below), whose sum is σ = 853962752. Its totient is φ = 398170080.

The previous prime is 618731411. The next prime is 618731431. The reversal of 618731427 is 724137816.

It is not a de Polignac number, because 618731427 - 2⁴ = 618731411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (618731437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7849 + ... + 36042.

It is an arithmetic number, because the mean of its divisors is an integer number (53372672).

Almost surely, 2^618731427 is an apocalyptic number.

618731427 is a deficient number, since it is larger than the sum of its proper divisors (235231325).

618731427 is a wasteful number, since it uses less digits than its factorization.

618731427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44058.

The product of its digits is 56448, while the sum is 39.

The square root of 618731427 is about 24874.3125935170. The cubic root of 618731427 is about 852.1199342393.

The spelling of 618731427 in words is "six hundred eighteen million, seven hundred thirty-one thousand, four hundred twenty-seven".