2161793141 has 4 divisors (see below), whose sum is σ = 2163423552. Its totient is φ = 2160162732.

The previous prime is 2161793071. The next prime is 2161793143. The reversal of 2161793141 is 1413971612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2161793141 - 2²² = 2157598837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161793143) 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, 813215 + ... + 815868.

It is an arithmetic number, because the mean of its divisors is an integer number (540855888).

Almost surely, 2^2161793141 is an apocalyptic number.

It is an amenable number.

2161793141 is a deficient number, since it is larger than the sum of its proper divisors (1630411).

2161793141 is a wasteful number, since it uses less digits than its factorization.

2161793141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630410.

The product of its digits is 9072, while the sum is 35.

The square root of 2161793141 is about 46495.0872781200. The cubic root of 2161793141 is about 1293.0184192639.

The spelling of 2161793141 in words is "two billion, one hundred sixty-one million, seven hundred ninety-three thousand, one hundred forty-one".