18350099989 has 8 divisors (see below), whose sum is σ = 19847944760. Its totient is φ = 16864583616.

The previous prime is 18350099987. The next prime is 18350100017. The reversal of 18350099989 is 98999005381.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4741011025 + 13609088964 = 68855^2 + 116658^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 18350099989 - 2¹ = 18350099987 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 (18350099981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3079002 + ... + 3084955.

It is an arithmetic number, because the mean of its divisors is an integer number (2480993095).

Almost surely, 2^18350099989 is an apocalyptic number.

It is an amenable number.

18350099989 is a deficient number, since it is larger than the sum of its proper divisors (1497844771).

18350099989 is a wasteful number, since it uses less digits than its factorization.

18350099989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6164199.

The product of its (nonzero) digits is 6298560, while the sum is 61.

The spelling of 18350099989 in words is "eighteen billion, three hundred fifty million, ninety-nine thousand, nine hundred eighty-nine".