18199000087 has 8 divisors (see below), whose sum is σ = 18226078416. Its totient is φ = 18171940992.

The previous prime is 18199000081. The next prime is 18199000103. The reversal of 18199000087 is 78000099181.

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-18199000087 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 (18199000081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4035688 + ... + 4040194.

It is an arithmetic number, because the mean of its divisors is an integer number (2278259802).

Almost surely, 2^18199000087 is an apocalyptic number.

18199000087 is a deficient number, since it is larger than the sum of its proper divisors (27078329).

18199000087 is an equidigital number, since it uses as much as digits as its factorization.

18199000087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9617.

The product of its (nonzero) digits is 36288, while the sum is 43.

The spelling of 18199000087 in words is "eighteen billion, one hundred ninety-nine million, eighty-seven", and thus it is an aban number.