18352861099 has 4 divisors (see below), whose sum is σ = 18353229064. Its totient is φ = 18352493136.

The previous prime is 18352861073. The next prime is 18352861117. The reversal of 18352861099 is 99016825381.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18352861099 - 2⁵ = 18352861067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18352861039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94737 + ... + 213730.

It is an arithmetic number, because the mean of its divisors is an integer number (4588307266).

Almost surely, 2^18352861099 is an apocalyptic number.

18352861099 is a deficient number, since it is larger than the sum of its proper divisors (367965).

18352861099 is an equidigital number, since it uses as much as digits as its factorization.

18352861099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367964.

The product of its (nonzero) digits is 933120, while the sum is 52.

The spelling of 18352861099 in words is "eighteen billion, three hundred fifty-two million, eight hundred sixty-one thousand, ninety-nine".