18523482201 has 27 divisors (see below), whose sum is σ = 31129293663. Its totient is φ = 10583213760.

The previous prime is 18523482179. The next prime is 18523482233. The reversal of 18523482201 is 10228432581.

It is a happy number.

The square root of 18523482201 is 136101.

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

It can be written as a sum of positive squares in only one way, i.e., 17609024601 + 914457600 = 132699^2 + 30240^2 .

It is not a de Polignac number, because 18523482201 - 2⁵ = 18523482169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18523482281) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2854881 + ... + 2861361.

Almost surely, 2^18523482201 is an apocalyptic number.

18523482201 is the 136101-st square number.

18523482201 is the 68051-st centered octagonal number.

It is an amenable number.

18523482201 is a deficient number, since it is larger than the sum of its proper divisors (12605811462).

18523482201 is an frugal number, since it uses more digits than its factorization.

18523482201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12982 (or 6491 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

Multiplying 18523482201 by its sum of digits (36), we get a square (666845359236 = 816606²).

The spelling of 18523482201 in words is "eighteen billion, five hundred twenty-three million, four hundred eighty-two thousand, two hundred one".