18104412291 has 16 divisors (see below), whose sum is σ = 28538976000. Its totient is φ = 9988640928.

The previous prime is 18104412283. The next prime is 18104412299. The reversal of 18104412291 is 19221440181.

It is an interprime number because it is at equal distance from previous prime (18104412283) and next prime (18104412299).

It is not a de Polignac number, because 18104412291 - 2³ = 18104412283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18104412299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14863441 + ... + 14864658.

It is an arithmetic number, because the mean of its divisors is an integer number (1783686000).

Almost surely, 2^18104412291 is an apocalyptic number.

18104412291 is a deficient number, since it is larger than the sum of its proper divisors (10434563709).

18104412291 is a wasteful number, since it uses less digits than its factorization.

18104412291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29728138.

The product of its (nonzero) digits is 4608, while the sum is 33.

The spelling of 18104412291 in words is "eighteen billion, one hundred four million, four hundred twelve thousand, two hundred ninety-one".