18295264809 has 6 divisors (see below), whose sum is σ = 26426493626. Its totient is φ = 12196843200.

The previous prime is 18295264807. The next prime is 18295264847. The reversal of 18295264809 is 90846259281.

It is a happy number.

18295264809 is a `hidden beast` number, since 18 + 29 + 526 + 4 + 80 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17946621225 + 348643584 = 133965^2 + 18672^2 .

It is not a de Polignac number, because 18295264809 - 2¹ = 18295264807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18295264807) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1016403592 + ... + 1016403609.

Almost surely, 2^18295264809 is an apocalyptic number.

It is an amenable number.

18295264809 is a deficient number, since it is larger than the sum of its proper divisors (8131228817).

18295264809 is a wasteful number, since it uses less digits than its factorization.

18295264809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032807207 (or 2032807204 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 18295264809 in words is "eighteen billion, two hundred ninety-five million, two hundred sixty-four thousand, eight hundred nine".