18230190529 has 4 divisors (see below), whose sum is σ = 18234933184. Its totient is φ = 18225447876.

The previous prime is 18230190479. The next prime is 18230190571. The reversal of 18230190529 is 92509103281.

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, and also an emirpimes, since its reverse is a distinct semiprime: 92509103281 = 7 ⋅13215586183.

It is a cyclic number.

It is not a de Polignac number, because 18230190529 - 2¹⁷ = 18230059457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18230190491 and 18230190500.

It is not an unprimeable number, because it can be changed into a prime (18230190029) 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, 2365557 + ... + 2373250.

It is an arithmetic number, because the mean of its divisors is an integer number (4558733296).

Almost surely, 2^18230190529 is an apocalyptic number.

It is an amenable number.

18230190529 is a deficient number, since it is larger than the sum of its proper divisors (4742655).

18230190529 is an equidigital number, since it uses as much as digits as its factorization.

18230190529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4742654.

The product of its (nonzero) digits is 38880, while the sum is 40.

The spelling of 18230190529 in words is "eighteen billion, two hundred thirty million, one hundred ninety thousand, five hundred twenty-nine".