1940116191 has 8 divisors (see below), whose sum is σ = 2785807920. Its totient is φ = 1193917632.

The previous prime is 1940116181. The next prime is 1940116193. The reversal of 1940116191 is 1916110491.

It is a happy number.

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

It is not a de Polignac number, because 1940116191 - 2⁵ = 1940116159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940116193) 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, 24873246 + ... + 24873323.

It is an arithmetic number, because the mean of its divisors is an integer number (348225990).

Almost surely, 2^1940116191 is an apocalyptic number.

1940116191 is a deficient number, since it is larger than the sum of its proper divisors (845691729).

1940116191 is a wasteful number, since it uses less digits than its factorization.

1940116191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49746585.

The product of its (nonzero) digits is 1944, while the sum is 33.

The square root of 1940116191 is about 44046.7500617242. The cubic root of 1940116191 is about 1247.2186030686.

The spelling of 1940116191 in words is "one billion, nine hundred forty million, one hundred sixteen thousand, one hundred ninety-one".