18300234661 has 8 divisors (see below), whose sum is σ = 18504511704. Its totient is φ = 18096276480.

The previous prime is 18300234587. The next prime is 18300234697. The reversal of 18300234661 is 16643200381.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6715802500 + 11584432161 = 81950^2 + 107631^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18300234661 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 (18300234461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36651 + ... + 194791.

It is an arithmetic number, because the mean of its divisors is an integer number (2313063963).

Almost surely, 2^18300234661 is an apocalyptic number.

It is an amenable number.

18300234661 is a deficient number, since it is larger than the sum of its proper divisors (204277043).

18300234661 is a wasteful number, since it uses less digits than its factorization.

18300234661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159431.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 18300234661 in words is "eighteen billion, three hundred million, two hundred thirty-four thousand, six hundred sixty-one".