18339361 has 2 divisors, whose sum is σ = 18339362. Its totient is φ = 18339360.

The previous prime is 18339337. The next prime is 18339407. The reversal of 18339361 is 16393381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15210000 + 3129361 = 3900^2 + 1769^2 .

It is a cyclic number.

It is not a de Polignac number, because 18339361 - 2⁵ = 18339329 is a prime.

It is not a weakly prime, because it can be changed into another prime (18339301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9169680 + 9169681.

It is an arithmetic number, because the mean of its divisors is an integer number (9169681).

Almost surely, 2^18339361 is an apocalyptic number.

It is an amenable number.

18339361 is a deficient number, since it is larger than the sum of its proper divisors (1).

18339361 is an equidigital number, since it uses as much as digits as its factorization.

18339361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 34.

The square root of 18339361 is about 4282.4480148625. The cubic root of 18339361 is about 263.7108912311.

The spelling of 18339361 in words is "eighteen million, three hundred thirty-nine thousand, three hundred sixty-one".