18265042433 has 4 divisors (see below), whose sum is σ = 19925500848. Its totient is φ = 16604584020.

The previous prime is 18265042429. The next prime is 18265042441. The reversal of 18265042433 is 33424056281.

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 18265042433 - 2² = 18265042429 is a prime.

It is a super-2 number, since 2×18265042433² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18265041433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 830229191 + ... + 830229212.

It is an arithmetic number, because the mean of its divisors is an integer number (4981375212).

Almost surely, 2^18265042433 is an apocalyptic number.

It is an amenable number.

18265042433 is a deficient number, since it is larger than the sum of its proper divisors (1660458415).

18265042433 is a wasteful number, since it uses less digits than its factorization.

18265042433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660458414.

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 18265042433 in words is "eighteen billion, two hundred sixty-five million, forty-two thousand, four hundred thirty-three".