18248473 has 2 divisors, whose sum is σ = 18248474. Its totient is φ = 18248472.

The previous prime is 18248449. The next prime is 18248479. The reversal of 18248473 is 37484281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11108889 + 7139584 = 3333^2 + 2672^2 .

It is an emirp because it is prime and its reverse (37484281) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18248473 - 2⁵ = 18248441 is a prime.

It is not a weakly prime, because it can be changed into another prime (18248479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9124236 + 9124237.

It is an arithmetic number, because the mean of its divisors is an integer number (9124237).

Almost surely, 2^18248473 is an apocalyptic number.

It is an amenable number.

18248473 is a deficient number, since it is larger than the sum of its proper divisors (1).

18248473 is an equidigital number, since it uses as much as digits as its factorization.

18248473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43008, while the sum is 37.

The square root of 18248473 is about 4271.8231470884. The cubic root of 18248473 is about 263.2745281642.

It can be divided in two parts, 18248 and 473, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 18248473 in words is "eighteen million, two hundred forty-eight thousand, four hundred seventy-three".