116161291 has 4 divisors (see below), whose sum is σ = 116263192. Its totient is φ = 116059392.

The previous prime is 116161273. The next prime is 116161301. The reversal of 116161291 is 192161611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 192161611 = 19 ⋅10113769.

It is a cyclic number.

It is not a de Polignac number, because 116161291 - 2⁵ = 116161259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116164291) 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, 49221 + ... + 51526.

It is an arithmetic number, because the mean of its divisors is an integer number (29065798).

Almost surely, 2^116161291 is an apocalyptic number.

116161291 is a deficient number, since it is larger than the sum of its proper divisors (101901).

116161291 is a wasteful number, since it uses less digits than its factorization.

116161291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101900.

The product of its digits is 648, while the sum is 28.

The square root of 116161291 is about 10777.8147599595. The cubic root of 116161291 is about 487.9258305154.

The spelling of 116161291 in words is "one hundred sixteen million, one hundred sixty-one thousand, two hundred ninety-one".