18183845474 has 8 divisors (see below), whose sum is σ = 27545825628. Its totient is φ = 9001903600.

The previous prime is 18183845423. The next prime is 18183845479. The reversal of 18183845474 is 47454838181.

It can be written as a sum of positive squares in 2 ways, for example, as 14446357249 + 3737488225 = 120193^2 + 61135^2 .

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

It is not an unprimeable number, because it can be changed into a prime (18183845479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45009317 + ... + 45009720.

Almost surely, 2^18183845474 is an apocalyptic number.

18183845474 is a deficient number, since it is larger than the sum of its proper divisors (9361980154).

18183845474 is a wasteful number, since it uses less digits than its factorization.

18183845474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90019140.

The product of its digits is 3440640, while the sum is 53.

The spelling of 18183845474 in words is "eighteen billion, one hundred eighty-three million, eight hundred forty-five thousand, four hundred seventy-four".