18329145 has 16 divisors (see below), whose sum is σ = 31052160. Its totient is φ = 9200384.

The previous prime is 18329141. The next prime is 18329161. The reversal of 18329145 is 54192381.

It is a cyclic number.

It is not a de Polignac number, because 18329145 - 2² = 18329141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18329141) 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, 35685 + ... + 36194.

It is an arithmetic number, because the mean of its divisors is an integer number (1940760).

Almost surely, 2^18329145 is an apocalyptic number.

18329145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18329145 is a deficient number, since it is larger than the sum of its proper divisors (12723015).

18329145 is a wasteful number, since it uses less digits than its factorization.

18329145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71904.

The product of its digits is 8640, while the sum is 33.

The square root of 18329145 is about 4281.2550729897. The cubic root of 18329145 is about 263.6619151360.

The spelling of 18329145 in words is "eighteen million, three hundred twenty-nine thousand, one hundred forty-five".