18080735 has 4 divisors (see below), whose sum is σ = 21696888. Its totient is φ = 14464584.

The previous prime is 18080731. The next prime is 18080743. The reversal of 18080735 is 53708081.

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 18080735 - 2² = 18080731 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18080731) 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, 1808069 + ... + 1808078.

It is an arithmetic number, because the mean of its divisors is an integer number (5424222).

Almost surely, 2^18080735 is an apocalyptic number.

18080735 is a deficient number, since it is larger than the sum of its proper divisors (3616153).

18080735 is an equidigital number, since it uses as much as digits as its factorization.

18080735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3616152.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 18080735 is about 4252.1447529453. The cubic root of 18080735 is about 262.4653801660.

The spelling of 18080735 in words is "eighteen million, eighty thousand, seven hundred thirty-five".