18406801 has 24 divisors (see below), whose sum is σ = 23885280. Its totient is φ = 14055552.

The previous prime is 18406789. The next prime is 18406807. The reversal of 18406801 is 10860481.

It is not a de Polignac number, because 18406801 - 2⁵ = 18406769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18406801.

It is not an unprimeable number, because it can be changed into a prime (18406807) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15246 + ... + 16408.

It is an arithmetic number, because the mean of its divisors is an integer number (995220).

Almost surely, 2^18406801 is an apocalyptic number.

It is an amenable number.

18406801 is a deficient number, since it is larger than the sum of its proper divisors (5478479).

18406801 is a wasteful number, since it uses less digits than its factorization.

18406801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213 (or 1206 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 18406801 is about 4290.3147903155. The cubic root of 18406801 is about 264.0337470251.

The spelling of 18406801 in words is "eighteen million, four hundred six thousand, eight hundred one".