18165487922 has 4 divisors (see below), whose sum is σ = 27248231886. Its totient is φ = 9082743960.

The previous prime is 18165487903. The next prime is 18165487927. The reversal of 18165487922 is 22978456181.

18165487922 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11380835761 + 6784652161 = 106681^2 + 82369^2 .

It is not an unprimeable number, because it can be changed into a prime (18165487927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4541371979 + ... + 4541371982.

Almost surely, 2^18165487922 is an apocalyptic number.

18165487922 is a deficient number, since it is larger than the sum of its proper divisors (9082743964).

18165487922 is an equidigital number, since it uses as much as digits as its factorization.

18165487922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9082743963.

The product of its digits is 1935360, while the sum is 53.

The spelling of 18165487922 in words is "eighteen billion, one hundred sixty-five million, four hundred eighty-seven thousand, nine hundred twenty-two".