18473475290 has 8 divisors (see below), whose sum is σ = 33252255540. Its totient is φ = 7389390112.

The previous prime is 18473475283. The next prime is 18473475299. The reversal of 18473475290 is 9257437481.

It can be written as a sum of positive squares in 2 ways, for example, as 18058253161 + 415222129 = 134381^2 + 20377^2 .

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 (18473475299) 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, 923673755 + ... + 923673774.

Almost surely, 2^18473475290 is an apocalyptic number.

18473475290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18473475290 is a deficient number, since it is larger than the sum of its proper divisors (14778780250).

18473475290 is a wasteful number, since it uses less digits than its factorization.

18473475290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847347536.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 18473475290 in words is "eighteen billion, four hundred seventy-three million, four hundred seventy-five thousand, two hundred ninety".