18245795929 has 3 divisors (see below), whose sum is σ = 18245931007. Its totient is φ = 18245660852.

The previous prime is 18245795863. The next prime is 18245795947. The reversal of 18245795929 is 92959754281.

The square root of 18245795929 is 135077.

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 can be written as a sum of positive squares in only one way, i.e., 3858273225 + 14387522704 = 62115^2 + 119948^2 .

It is not a de Polignac number, because 18245795929 - 2⁷ = 18245795801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18245795429) 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, 67539 + ... + 202615.

Almost surely, 2^18245795929 is an apocalyptic number.

18245795929 is the 135077-th square number.

18245795929 is the 67539-th centered octagonal number.

It is an amenable number.

18245795929 is a deficient number, since it is larger than the sum of its proper divisors (135078).

18245795929 is an frugal number, since it uses more digits than its factorization.

18245795929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270154 (or 135077 counting only the distinct ones).

The product of its digits is 16329600, while the sum is 61.

The spelling of 18245795929 in words is "eighteen billion, two hundred forty-five million, seven hundred ninety-five thousand, nine hundred twenty-nine".