18244106406 has 24 divisors (see below), whose sum is σ = 39531389040. Its totient is φ = 6080985456.

The previous prime is 18244106401. The next prime is 18244106411. The reversal of 18244106406 is 60460144281.

It is a happy number.

18244106406 is a `hidden beast` number, since 1 + 8 + 2 + 4 + 4 + 1 + 0 + 640 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (18244106401) and next prime (18244106411).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18244106401) 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, 510160 + ... + 544748.

It is an arithmetic number, because the mean of its divisors is an integer number (1647141210).

Almost surely, 2^18244106406 is an apocalyptic number.

18244106406 is an abundant number, since it is smaller than the sum of its proper divisors (21287282634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18244106406 is a wasteful number, since it uses less digits than its factorization.

18244106406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63900 (or 63897 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The spelling of 18244106406 in words is "eighteen billion, two hundred forty-four million, one hundred six thousand, four hundred six".