18232061 has 4 divisors (see below), whose sum is σ = 18820224. Its totient is φ = 17643900.

The previous prime is 18232021. The next prime is 18232063. The reversal of 18232061 is 16023281.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18232061 - 2¹⁴ = 18215677 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18232063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294035 + ... + 294096.

It is an arithmetic number, because the mean of its divisors is an integer number (4705056).

Almost surely, 2^18232061 is an apocalyptic number.

It is an amenable number.

18232061 is a deficient number, since it is larger than the sum of its proper divisors (588163).

18232061 is an equidigital number, since it uses as much as digits as its factorization.

18232061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588162.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 18232061 is about 4269.9017553101. The cubic root of 18232061 is about 263.1955780415.

The spelling of 18232061 in words is "eighteen million, two hundred thirty-two thousand, sixty-one".