13681451 has 16 divisors (see below), whose sum is σ = 16078080. Its totient is φ = 11400480.

The previous prime is 13681433. The next prime is 13681469. The reversal of 13681451 is 15418631.

It is an interprime number because it is at equal distance from previous prime (13681433) and next prime (13681469).

It is a de Polignac number, because none of the positive numbers 2^k-13681451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13681951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64736 + ... + 64946.

It is an arithmetic number, because the mean of its divisors is an integer number (1004880).

Almost surely, 2^13681451 is an apocalyptic number.

13681451 is a deficient number, since it is larger than the sum of its proper divisors (2396629).

13681451 is a wasteful number, since it uses less digits than its factorization.

13681451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434.

The product of its digits is 2880, while the sum is 29.

The square root of 13681451 is about 3698.8445493154. The cubic root of 13681451 is about 239.1722118012.

The spelling of 13681451 in words is "thirteen million, six hundred eighty-one thousand, four hundred fifty-one".