18434263759 has 4 divisors (see below), whose sum is σ = 18557983800. Its totient is φ = 18310543720.

The previous prime is 18434263711. The next prime is 18434263781. The reversal of 18434263759 is 95736243481.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18434263759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18434563759) 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, 61859797 + ... + 61860094.

It is an arithmetic number, because the mean of its divisors is an integer number (4639495950).

Almost surely, 2^18434263759 is an apocalyptic number.

18434263759 is a deficient number, since it is larger than the sum of its proper divisors (123720041).

18434263759 is a wasteful number, since it uses less digits than its factorization.

18434263759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123720040.

The product of its digits is 4354560, while the sum is 52.

The spelling of 18434263759 in words is "eighteen billion, four hundred thirty-four million, two hundred sixty-three thousand, seven hundred fifty-nine".