18060397 has 2 divisors, whose sum is σ = 18060398. Its totient is φ = 18060396.

The previous prime is 18060389. The next prime is 18060433. The reversal of 18060397 is 79306081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15217801 + 2842596 = 3901^2 + 1686^2 .

It is a cyclic number.

It is not a de Polignac number, because 18060397 - 2³ = 18060389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18060337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9030198 + 9030199.

It is an arithmetic number, because the mean of its divisors is an integer number (9030199).

Almost surely, 2^18060397 is an apocalyptic number.

It is an amenable number.

18060397 is a deficient number, since it is larger than the sum of its proper divisors (1).

18060397 is an equidigital number, since it uses as much as digits as its factorization.

18060397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 18060397 is about 4249.7525810334. The cubic root of 18060397 is about 262.3669324050.

The spelling of 18060397 in words is "eighteen million, sixty thousand, three hundred ninety-seven".