13691882 has 4 divisors (see below), whose sum is σ = 20537826. Its totient is φ = 6845940.

The previous prime is 13691879. The next prime is 13691891. The reversal of 13691882 is 28819631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28819631 = 1087 ⋅26513.

It can be written as a sum of positive squares in only one way, i.e., 13388281 + 303601 = 3659^2 + 551^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3422969 + ... + 3422972.

Almost surely, 2^13691882 is an apocalyptic number.

13691882 is a deficient number, since it is larger than the sum of its proper divisors (6845944).

13691882 is an equidigital number, since it uses as much as digits as its factorization.

13691882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6845943.

The product of its digits is 20736, while the sum is 38.

The square root of 13691882 is about 3700.2543155843. The cubic root of 13691882 is about 239.2329795171.

The spelling of 13691882 in words is "thirteen million, six hundred ninety-one thousand, eight hundred eighty-two".