18048973 has 2 divisors, whose sum is σ = 18048974. Its totient is φ = 18048972.

The previous prime is 18048967. The next prime is 18048977. The reversal of 18048973 is 37984081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15984004 + 2064969 = 3998^2 + 1437^2 .

It is a cyclic number.

It is not a de Polignac number, because 18048973 - 2²¹ = 15951821 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18048977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9024486 + 9024487.

It is an arithmetic number, because the mean of its divisors is an integer number (9024487).

Almost surely, 2^18048973 is an apocalyptic number.

It is an amenable number.

18048973 is a deficient number, since it is larger than the sum of its proper divisors (1).

18048973 is an equidigital number, since it uses as much as digits as its factorization.

18048973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 18048973 is about 4248.4082901717. The cubic root of 18048973 is about 262.3116011734.

The spelling of 18048973 in words is "eighteen million, forty-eight thousand, nine hundred seventy-three".