18407894067 has 12 divisors (see below), whose sum is σ = 26590420584. Its totient is φ = 12271356960.

The previous prime is 18407894053. The next prime is 18407894111. The reversal of 18407894067 is 76049870481.

It is a happy number.

It is not a de Polignac number, because 18407894067 - 2¹⁰ = 18407893043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18407894017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 261343 + ... + 324215.

It is an arithmetic number, because the mean of its divisors is an integer number (2215868382).

Almost surely, 2^18407894067 is an apocalyptic number.

18407894067 is a deficient number, since it is larger than the sum of its proper divisors (8182526517).

18407894067 is a wasteful number, since it uses less digits than its factorization.

18407894067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95410 (or 95407 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 54.

The spelling of 18407894067 in words is "eighteen billion, four hundred seven million, eight hundred ninety-four thousand, sixty-seven".