18842299 has 16 divisors (see below), whose sum is σ = 22429440. Its totient is φ = 15492960.

The previous prime is 18842297. The next prime is 18842309. The reversal of 18842299 is 99224881.

It is not a de Polignac number, because 18842299 - 2¹ = 18842297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (18842293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17229 + ... + 18289.

It is an arithmetic number, because the mean of its divisors is an integer number (1401840).

Almost surely, 2^18842299 is an apocalyptic number.

18842299 is a deficient number, since it is larger than the sum of its proper divisors (3587141).

18842299 is a wasteful number, since it uses less digits than its factorization.

18842299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170.

The product of its digits is 82944, while the sum is 43.

The square root of 18842299 is about 4340.7717055842. The cubic root of 18842299 is about 266.0998503913.

The spelling of 18842299 in words is "eighteen million, eight hundred forty-two thousand, two hundred ninety-nine".