18236202164 has 6 divisors (see below), whose sum is σ = 31913353794. Its totient is φ = 9118101080.

The previous prime is 18236202151. The next prime is 18236202167. The reversal of 18236202164 is 46120263281.

It can be written as a sum of positive squares in only one way, i.e., 16814308900 + 1421893264 = 129670^2 + 37708^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18236202167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2279525267 + ... + 2279525274.

It is an arithmetic number, because the mean of its divisors is an integer number (5318892299).

Almost surely, 2^18236202164 is an apocalyptic number.

It is an amenable number.

18236202164 is a deficient number, since it is larger than the sum of its proper divisors (13677151630).

18236202164 is a wasteful number, since it uses less digits than its factorization.

18236202164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4559050545 (or 4559050543 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 18236202164 in words is "eighteen billion, two hundred thirty-six million, two hundred two thousand, one hundred sixty-four".