18230775 has 12 divisors (see below), whose sum is σ = 30141672. Its totient is φ = 9723040.

The previous prime is 18230761. The next prime is 18230777. The reversal of 18230775 is 57703281.

It is not a de Polignac number, because 18230775 - 2⁶ = 18230711 is a prime.

It is a super-2 number, since 2×18230775² = 664722314201250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18230777) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121464 + ... + 121613.

It is an arithmetic number, because the mean of its divisors is an integer number (2511806).

Almost surely, 2^18230775 is an apocalyptic number.

18230775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18230775 is a deficient number, since it is larger than the sum of its proper divisors (11910897).

18230775 is a wasteful number, since it uses less digits than its factorization.

18230775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243090 (or 243085 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 18230775 is about 4269.7511637097. The cubic root of 18230775 is about 263.1893897217.

The spelling of 18230775 in words is "eighteen million, two hundred thirty thousand, seven hundred seventy-five".