18213883807 has 16 divisors (see below), whose sum is σ = 20944207872. Its totient is φ = 15515881920.

The previous prime is 18213883757. The next prime is 18213883813. The reversal of 18213883807 is 70838831281.

It is a happy number.

It is not a de Polignac number, because 18213883807 - 2¹¹ = 18213881759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18213883837) 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, 953682 + ... + 972592.

It is an arithmetic number, because the mean of its divisors is an integer number (1309012992).

Almost surely, 2^18213883807 is an apocalyptic number.

18213883807 is a deficient number, since it is larger than the sum of its proper divisors (2730324065).

18213883807 is a wasteful number, since it uses less digits than its factorization.

18213883807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19758.

The product of its (nonzero) digits is 516096, while the sum is 49.

The spelling of 18213883807 in words is "eighteen billion, two hundred thirteen million, eight hundred eighty-three thousand, eight hundred seven".