18342099 has 32 divisors (see below), whose sum is σ = 29160000. Its totient is φ = 11354112.

The previous prime is 18342061. The next prime is 18342101. The reversal of 18342099 is 99024381.

It is not a de Polignac number, because 18342099 - 2¹¹ = 18340051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18342899) 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 31 ways as a sum of consecutive naturals, for example, 40627 + ... + 41075.

It is an arithmetic number, because the mean of its divisors is an integer number (911250).

Almost surely, 2^18342099 is an apocalyptic number.

18342099 is a deficient number, since it is larger than the sum of its proper divisors (10817901).

18342099 is a wasteful number, since it uses less digits than its factorization.

18342099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564 (or 558 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 18342099 is about 4282.7676799005. The cubic root of 18342099 is about 263.7240142709.

The spelling of 18342099 in words is "eighteen million, three hundred forty-two thousand, ninety-nine".