18022776939 has 10 divisors (see below), whose sum is σ = 26922913820. Its totient is φ = 12015184572.

The previous prime is 18022776917. The next prime is 18022776949. The reversal of 18022776939 is 93967722081.

It is not a de Polignac number, because 18022776939 - 2⁵ = 18022776907 is a prime.

It is a super-3 number, since 3×18022776939³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18022776949) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 111251629 + ... + 111251790.

It is an arithmetic number, because the mean of its divisors is an integer number (2692291382).

Almost surely, 2^18022776939 is an apocalyptic number.

18022776939 is a deficient number, since it is larger than the sum of its proper divisors (8900136881).

18022776939 is an equidigital number, since it uses as much as digits as its factorization.

18022776939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222503431 (or 222503422 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 18022776939 in words is "eighteen billion, twenty-two million, seven hundred seventy-six thousand, nine hundred thirty-nine".