2161115741 has 8 divisors (see below), whose sum is σ = 2232701184. Its totient is φ = 2089647360.

The previous prime is 2161115717. The next prime is 2161115743. The reversal of 2161115741 is 1475111612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2161115741 - 2²⁶ = 2094006877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161115743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9086 + ... + 66368.

It is an arithmetic number, because the mean of its divisors is an integer number (279087648).

Almost surely, 2^2161115741 is an apocalyptic number.

It is an amenable number.

2161115741 is a deficient number, since it is larger than the sum of its proper divisors (71585443).

2161115741 is a wasteful number, since it uses less digits than its factorization.

2161115741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58531.

The product of its digits is 1680, while the sum is 29.

The square root of 2161115741 is about 46487.8020667788. The cubic root of 2161115741 is about 1292.8833489584.

The spelling of 2161115741 in words is "two billion, one hundred sixty-one million, one hundred fifteen thousand, seven hundred forty-one".