18184792201 has 3 divisors (see below), whose sum is σ = 18184927053. Its totient is φ = 18184657350.

The previous prime is 18184792193. The next prime is 18184792207. The reversal of 18184792201 is 10229748181.

The square root of 18184792201 is 134851.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 18184792201 - 2³ = 18184792193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18184792207) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 67426 + ... + 202276.

It is an arithmetic number, because the mean of its divisors is an integer number (6061642351).

Almost surely, 2^18184792201 is an apocalyptic number.

18184792201 is the 134851-st square number.

18184792201 is the 67426-th centered octagonal number.

It is an amenable number.

18184792201 is a deficient number, since it is larger than the sum of its proper divisors (134852).

18184792201 is an frugal number, since it uses more digits than its factorization.

18184792201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269702 (or 134851 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 43.

The spelling of 18184792201 in words is "eighteen billion, one hundred eighty-four million, seven hundred ninety-two thousand, two hundred one".