13981161 has 16 divisors (see below), whose sum is σ = 19388160. Its totient is φ = 8951040.

The previous prime is 13981147. The next prime is 13981193. The reversal of 13981161 is 16118931.

It is not a de Polignac number, because 13981161 - 2¹¹ = 13979113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13981111) 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, 23281 + ... + 23873.

It is an arithmetic number, because the mean of its divisors is an integer number (1211760).

Almost surely, 2^13981161 is an apocalyptic number.

It is an amenable number.

13981161 is a deficient number, since it is larger than the sum of its proper divisors (5406999).

13981161 is a wasteful number, since it uses less digits than its factorization.

13981161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896.

The product of its digits is 1296, while the sum is 30.

The square root of 13981161 is about 3739.1390720325. The cubic root of 13981161 is about 240.9060715330.

The spelling of 13981161 in words is "thirteen million, nine hundred eighty-one thousand, one hundred sixty-one".