18399999363 has 4 divisors (see below), whose sum is σ = 24533332488. Its totient is φ = 12266666240.

The previous prime is 18399999353. The next prime is 18399999433. The reversal of 18399999363 is 36399999381.

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 18399999363 - 2¹³ = 18399991171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18399999353) 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, 3066666558 + ... + 3066666563.

It is an arithmetic number, because the mean of its divisors is an integer number (6133333122).

Almost surely, 2^18399999363 is an apocalyptic number.

18399999363 is a deficient number, since it is larger than the sum of its proper divisors (6133333125).

18399999363 is an equidigital number, since it uses as much as digits as its factorization.

18399999363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6133333124.

The product of its digits is 76527504, while the sum is 69.

The spelling of 18399999363 in words is "eighteen billion, three hundred ninety-nine million, nine hundred ninety-nine thousand, three hundred sixty-three".