18080847 has 8 divisors (see below), whose sum is σ = 26786480. Its totient is φ = 12053880.

The previous prime is 18080831. The next prime is 18080861. The reversal of 18080847 is 74808081.

It is not a de Polignac number, because 18080847 - 2⁴ = 18080831 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 (18080807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334804 + ... + 334857.

It is an arithmetic number, because the mean of its divisors is an integer number (3348310).

Almost surely, 2^18080847 is an apocalyptic number.

18080847 is a deficient number, since it is larger than the sum of its proper divisors (8705633).

18080847 is an equidigital number, since it uses as much as digits as its factorization.

18080847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669670 (or 669664 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 18080847 is about 4252.1579227493. The cubic root of 18080847 is about 262.4659221068.

The spelling of 18080847 in words is "eighteen million, eighty thousand, eight hundred forty-seven".