15368161 has 2 divisors, whose sum is σ = 15368162. Its totient is φ = 15368160.

The previous prime is 15368149. The next prime is 15368189. The reversal of 15368161 is 16186351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15171025 + 197136 = 3895^2 + 444^2 .

It is an emirp because it is prime and its reverse (16186351) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15368161 - 2¹³ = 15359969 is a prime.

It is not a weakly prime, because it can be changed into another prime (15368461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7684080 + 7684081.

It is an arithmetic number, because the mean of its divisors is an integer number (7684081).

Almost surely, 2^15368161 is an apocalyptic number.

It is an amenable number.

15368161 is a deficient number, since it is larger than the sum of its proper divisors (1).

15368161 is an equidigital number, since it uses as much as digits as its factorization.

15368161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 31.

The square root of 15368161 is about 3920.2246109120. The cubic root of 15368161 is about 248.6226172033.

The spelling of 15368161 in words is "fifteen million, three hundred sixty-eight thousand, one hundred sixty-one".