18287468761 has 4 divisors (see below), whose sum is σ = 18458379792. Its totient is φ = 18116557732.

The previous prime is 18287468729. The next prime is 18287468789. The reversal of 18287468761 is 16786478281.

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 18287468761 - 2⁵ = 18287468729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18287468696 and 18287468705.

It is not an unprimeable number, because it can be changed into a prime (18287468161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85455355 + ... + 85455568.

It is an arithmetic number, because the mean of its divisors is an integer number (4614594948).

Almost surely, 2^18287468761 is an apocalyptic number.

It is an amenable number.

18287468761 is a deficient number, since it is larger than the sum of its proper divisors (170911031).

18287468761 is a wasteful number, since it uses less digits than its factorization.

18287468761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170911030.

The product of its digits is 7225344, while the sum is 58.

The spelling of 18287468761 in words is "eighteen billion, two hundred eighty-seven million, four hundred sixty-eight thousand, seven hundred sixty-one".