2191692441 has 8 divisors (see below), whose sum is σ = 2928854880. Its totient is φ = 1457829152.

The previous prime is 2191692421. The next prime is 2191692463. The reversal of 2191692441 is 1442961912.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2191692441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2191692441.

It is not an unprimeable number, because it can be changed into a prime (2191692421) 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, 823236 + ... + 825893.

It is an arithmetic number, because the mean of its divisors is an integer number (366106860).

Almost surely, 2^2191692441 is an apocalyptic number.

It is an amenable number.

2191692441 is a deficient number, since it is larger than the sum of its proper divisors (737162439).

2191692441 is a wasteful number, since it uses less digits than its factorization.

2191692441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649575.

The product of its digits is 31104, while the sum is 39.

The square root of 2191692441 is about 46815.5149603206. The cubic root of 2191692441 is about 1298.9523000428.

The spelling of 2191692441 in words is "two billion, one hundred ninety-one million, six hundred ninety-two thousand, four hundred forty-one".