18406486 has 16 divisors (see below), whose sum is σ = 32926464. Its totient is φ = 7545384.

The previous prime is 18406483. The next prime is 18406489. The reversal of 18406486 is 68460481.

It is an interprime number because it is at equal distance from previous prime (18406483) and next prime (18406489).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18406483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28260 + ... + 28903.

It is an arithmetic number, because the mean of its divisors is an integer number (2057904).

Almost surely, 2^18406486 is an apocalyptic number.

18406486 is a deficient number, since it is larger than the sum of its proper divisors (14519978).

18406486 is a wasteful number, since it uses less digits than its factorization.

18406486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57195.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 18406486 is about 4290.2780795655. The cubic root of 18406486 is about 264.0322408589.

The spelling of 18406486 in words is "eighteen million, four hundred six thousand, four hundred eighty-six".