18002212807 has 4 divisors (see below), whose sum is σ = 18080825320. Its totient is φ = 17923600296.

The previous prime is 18002212783. The next prime is 18002212847. The reversal of 18002212807 is 70821220081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70821220081 = 953 ⋅74313977.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18002212807 is a prime.

It is a super-3 number, since 3×18002212807³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18002212847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39305913 + ... + 39306370.

It is an arithmetic number, because the mean of its divisors is an integer number (4520206330).

Almost surely, 2^18002212807 is an apocalyptic number.

18002212807 is a deficient number, since it is larger than the sum of its proper divisors (78612513).

18002212807 is an equidigital number, since it uses as much as digits as its factorization.

18002212807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78612512.

The product of its (nonzero) digits is 3584, while the sum is 31.

Adding to 18002212807 its reverse (70821220081), we get a palindrome (88823432888).

The spelling of 18002212807 in words is "eighteen billion, two million, two hundred twelve thousand, eight hundred seven".