13913081 has 16 divisors (see below), whose sum is σ = 17493504. Its totient is φ = 10770624.

The previous prime is 13913077. The next prime is 13913093. The reversal of 13913081 is 18031931.

It is a cyclic number.

It is not a de Polignac number, because 13913081 - 2² = 13913077 is a prime.

It is a super-2 number, since 2×13913081² = 387147645825122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13913081.

It is not an unprimeable number, because it can be changed into a prime (13913051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2651 + ... + 5903.

It is an arithmetic number, because the mean of its divisors is an integer number (1093344).

Almost surely, 2^13913081 is an apocalyptic number.

It is an amenable number.

13913081 is a deficient number, since it is larger than the sum of its proper divisors (3580423).

13913081 is a wasteful number, since it uses less digits than its factorization.

13913081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3320.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 13913081 is about 3730.0242626557. The cubic root of 13913081 is about 240.5144116778.

The spelling of 13913081 in words is "thirteen million, nine hundred thirteen thousand, eighty-one".