13801191 has 4 divisors (see below), whose sum is σ = 18401592. Its totient is φ = 9200792.

The previous prime is 13801159. The next prime is 13801199. The reversal of 13801191 is 19110831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19110831 = 3 ⋅6370277.

It is a cyclic number.

It is not a de Polignac number, because 13801191 - 2⁵ = 13801159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13801199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2300196 + ... + 2300201.

It is an arithmetic number, because the mean of its divisors is an integer number (4600398).

Almost surely, 2^13801191 is an apocalyptic number.

13801191 is a deficient number, since it is larger than the sum of its proper divisors (4600401).

13801191 is an equidigital number, since it uses as much as digits as its factorization.

13801191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4600400.

The product of its (nonzero) digits is 216, while the sum is 24.

The square root of 13801191 is about 3714.9954239541. The cubic root of 13801191 is about 239.8679308094.

The spelling of 13801191 in words is "thirteen million, eight hundred one thousand, one hundred ninety-one".