18860573 has 2 divisors, whose sum is σ = 18860574. Its totient is φ = 18860572.

The previous prime is 18860563. The next prime is 18860581. The reversal of 18860573 is 37506881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16467364 + 2393209 = 4058^2 + 1547^2 .

It is a cyclic number.

It is not a de Polignac number, because 18860573 - 2⁴ = 18860557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18860503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9430286 + 9430287.

It is an arithmetic number, because the mean of its divisors is an integer number (9430287).

Almost surely, 2^18860573 is an apocalyptic number.

It is an amenable number.

18860573 is a deficient number, since it is larger than the sum of its proper divisors (1).

18860573 is an equidigital number, since it uses as much as digits as its factorization.

18860573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 18860573 is about 4342.8761207292. The cubic root of 18860573 is about 266.1858472840.

The spelling of 18860573 in words is "eighteen million, eight hundred sixty thousand, five hundred seventy-three".