13861161 has 24 divisors (see below), whose sum is σ = 20593664. Its totient is φ = 8981280.

The previous prime is 13861129. The next prime is 13861163. The reversal of 13861161 is 16116831.

It is not a de Polignac number, because 13861161 - 2⁵ = 13861129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13861163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76491 + ... + 76671.

Almost surely, 2^13861161 is an apocalyptic number.

It is an amenable number.

13861161 is a deficient number, since it is larger than the sum of its proper divisors (6732503).

13861161 is a wasteful number, since it uses less digits than its factorization.

13861161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 378 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 13861161 is about 3723.0580172756. The cubic root of 13861161 is about 240.2148596731.

Adding to 13861161 its reverse (16116831), we get a palindrome (29977992).

The spelling of 13861161 in words is "thirteen million, eight hundred sixty-one thousand, one hundred sixty-one".