18744746605 has 8 divisors (see below), whose sum is σ = 24223980312. Its totient is φ = 13842274368.

The previous prime is 18744746599. The next prime is 18744746611. The reversal of 18744746605 is 50664744781.

It is an interprime number because it is at equal distance from previous prime (18744746599) and next prime (18744746611).

It can be written as a sum of positive squares in 4 ways, for example, as 1218428836 + 17526317769 = 34906^2 + 132387^2 .

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

It is not a de Polignac number, because 18744746605 - 2³ = 18744746597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144190294 + ... + 144190423.

It is an arithmetic number, because the mean of its divisors is an integer number (3027997539).

Almost surely, 2^18744746605 is an apocalyptic number.

It is an amenable number.

18744746605 is a deficient number, since it is larger than the sum of its proper divisors (5479233707).

18744746605 is a wasteful number, since it uses less digits than its factorization.

18744746605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288380735.

The product of its (nonzero) digits is 4515840, while the sum is 52.

The spelling of 18744746605 in words is "eighteen billion, seven hundred forty-four million, seven hundred forty-six thousand, six hundred five".