18080447 has 8 divisors (see below), whose sum is σ = 22541952. Its totient is φ = 14088600.

The previous prime is 18080441. The next prime is 18080453. The reversal of 18080447 is 74408081.

It is an interprime number because it is at equal distance from previous prime (18080441) and next prime (18080453).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18080447 - 2⁴ = 18080431 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 (18080441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117329 + ... + 117482.

It is an arithmetic number, because the mean of its divisors is an integer number (2817744).

Almost surely, 2^18080447 is an apocalyptic number.

18080447 is a deficient number, since it is larger than the sum of its proper divisors (4461505).

18080447 is a wasteful number, since it uses less digits than its factorization.

18080447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234829.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 18080447 is about 4252.1108875475. The cubic root of 18080447 is about 262.4639865938.

The spelling of 18080447 in words is "eighteen million, eighty thousand, four hundred forty-seven".