18860797 has 2 divisors, whose sum is σ = 18860798. Its totient is φ = 18860796.

The previous prime is 18860767. The next prime is 18860801. The reversal of 18860797 is 79706881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13793796 + 5067001 = 3714^2 + 2251^2 .

It is a cyclic number.

It is not a de Polignac number, because 18860797 - 2¹⁹ = 18336509 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18860747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9430398 + 9430399.

It is an arithmetic number, because the mean of its divisors is an integer number (9430399).

Almost surely, 2^18860797 is an apocalyptic number.

It is an amenable number.

18860797 is a deficient number, since it is larger than the sum of its proper divisors (1).

18860797 is an equidigital number, since it uses as much as digits as its factorization.

18860797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 46.

The square root of 18860797 is about 4342.9019100136. The cubic root of 18860797 is about 266.1869010766.

The spelling of 18860797 in words is "eighteen million, eight hundred sixty thousand, seven hundred ninety-seven".