18493408611 has 12 divisors (see below), whose sum is σ = 26753617488. Its totient is φ = 12310054704.

The previous prime is 18493408603. The next prime is 18493408651. The reversal of 18493408611 is 11680439481.

18493408611 is a `hidden beast` number, since 184 + 9 + 3 + 408 + 61 + 1 = 666.

It is not a de Polignac number, because 18493408611 - 2³ = 18493408603 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18493408601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1567495 + ... + 1579248.

It is an arithmetic number, because the mean of its divisors is an integer number (2229468124).

Almost surely, 2^18493408611 is an apocalyptic number.

18493408611 is a deficient number, since it is larger than the sum of its proper divisors (8260208877).

18493408611 is a wasteful number, since it uses less digits than its factorization.

18493408611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3147402 (or 3147399 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 18493408611 in words is "eighteen billion, four hundred ninety-three million, four hundred eight thousand, six hundred eleven".