18579077091 has 12 divisors (see below), whose sum is σ = 26847662400. Its totient is φ = 12380874000.

The previous prime is 18579077087. The next prime is 18579077093. The reversal of 18579077091 is 19077097581.

It is not a de Polignac number, because 18579077091 - 2² = 18579077087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18579077093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 408660 + ... + 451841.

It is an arithmetic number, because the mean of its divisors is an integer number (2237305200).

Almost surely, 2^18579077091 is an apocalyptic number.

18579077091 is a deficient number, since it is larger than the sum of its proper divisors (8268585309).

18579077091 is a wasteful number, since it uses less digits than its factorization.

18579077091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862906 (or 862903 counting only the distinct ones).

The product of its (nonzero) digits is 1111320, while the sum is 54.

The spelling of 18579077091 in words is "eighteen billion, five hundred seventy-nine million, seventy-seven thousand, ninety-one".