18132799 has 16 divisors (see below), whose sum is σ = 19554304. Its totient is φ = 16783200.

The previous prime is 18132797. The next prime is 18132811. The reversal of 18132799 is 99723181.

It is a cyclic number.

It is not a de Polignac number, because 18132799 - 2¹ = 18132797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18132797) 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, 81202 + ... + 81424.

It is an arithmetic number, because the mean of its divisors is an integer number (1222144).

Almost surely, 2^18132799 is an apocalyptic number.

18132799 is a deficient number, since it is larger than the sum of its proper divisors (1421505).

18132799 is a wasteful number, since it uses less digits than its factorization.

18132799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358.

The product of its digits is 27216, while the sum is 40.

The square root of 18132799 is about 4258.2624390707. The cubic root of 18132799 is about 262.7170642973.

The spelling of 18132799 in words is "eighteen million, one hundred thirty-two thousand, seven hundred ninety-nine".