618131877 has 16 divisors (see below), whose sum is σ = 938193408. Its totient is φ = 358336880.

The previous prime is 618131873. The next prime is 618131887. The reversal of 618131877 is 778131816.

It is not a de Polignac number, because 618131877 - 2² = 618131873 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618131873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 406443 + ... + 407960.

It is an arithmetic number, because the mean of its divisors is an integer number (58637088).

Almost surely, 2^618131877 is an apocalyptic number.

It is an amenable number.

618131877 is a deficient number, since it is larger than the sum of its proper divisors (320061531).

618131877 is a wasteful number, since it uses less digits than its factorization.

618131877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814440.

The product of its digits is 56448, while the sum is 42.

The square root of 618131877 is about 24862.2580832876. The cubic root of 618131877 is about 851.8446108977.

The spelling of 618131877 in words is "six hundred eighteen million, one hundred thirty-one thousand, eight hundred seventy-seven".