18742184405 has 16 divisors (see below), whose sum is σ = 25755940224. Its totient is φ = 12825597120.

The previous prime is 18742184389. The next prime is 18742184411. The reversal of 18742184405 is 50448124781.

It is not a de Polignac number, because 18742184405 - 2⁴ = 18742184389 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 528122 + ... + 562491.

It is an arithmetic number, because the mean of its divisors is an integer number (1609746264).

Almost surely, 2^18742184405 is an apocalyptic number.

It is an amenable number.

18742184405 is a deficient number, since it is larger than the sum of its proper divisors (7013755819).

18742184405 is a wasteful number, since it uses less digits than its factorization.

18742184405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091116.

The product of its (nonzero) digits is 286720, while the sum is 44.

The spelling of 18742184405 in words is "eighteen billion, seven hundred forty-two million, one hundred eighty-four thousand, four hundred five".