18290586809 has 8 divisors (see below), whose sum is σ = 19954445952. Its totient is φ = 16626907440.

The previous prime is 18290586767. The next prime is 18290586817. The reversal of 18290586809 is 90868509281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18290586809 - 2¹⁶ = 18290521273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18290586869) 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, 254672 + ... + 318494.

It is an arithmetic number, because the mean of its divisors is an integer number (2494305744).

Almost surely, 2^18290586809 is an apocalyptic number.

It is an amenable number.

18290586809 is a deficient number, since it is larger than the sum of its proper divisors (1663859143).

18290586809 is a wasteful number, since it uses less digits than its factorization.

18290586809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89887.

The product of its (nonzero) digits is 2488320, while the sum is 56.

The spelling of 18290586809 in words is "eighteen billion, two hundred ninety million, five hundred eighty-six thousand, eight hundred nine".