13492681 has 2 divisors, whose sum is σ = 13492682. Its totient is φ = 13492680.

The previous prime is 13492643. The next prime is 13492693. The reversal of 13492681 is 18629431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9120400 + 4372281 = 3020^2 + 2091^2 .

It is an emirp because it is prime and its reverse (18629431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13492681 - 2¹³ = 13484489 is a prime.

It is a super-2 number, since 2×13492681² = 364104881135522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13492601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6746340 + 6746341.

It is an arithmetic number, because the mean of its divisors is an integer number (6746341).

Almost surely, 2^13492681 is an apocalyptic number.

It is an amenable number.

13492681 is a deficient number, since it is larger than the sum of its proper divisors (1).

13492681 is an equidigital number, since it uses as much as digits as its factorization.

13492681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 34.

The square root of 13492681 is about 3673.2384893987. The cubic root of 13492681 is about 238.0671196896.

The spelling of 13492681 in words is "thirteen million, four hundred ninety-two thousand, six hundred eighty-one".