191681046 has 16 divisors (see below), whose sum is σ = 425958000. Its totient is φ = 63893664.

The previous prime is 191681023. The next prime is 191681047. The reversal of 191681046 is 640186191.

It is a happy number.

191681046 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 191681046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191681047) 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, 1774771 + ... + 1774878.

It is an arithmetic number, because the mean of its divisors is an integer number (26622375).

Almost surely, 2^191681046 is an apocalyptic number.

191681046 is an abundant number, since it is smaller than the sum of its proper divisors (234276954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191681046 is a wasteful number, since it uses less digits than its factorization.

191681046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3549660 (or 3549654 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 191681046 is about 13844.8924156167. The cubic root of 191681046 is about 576.5801987957.

The spelling of 191681046 in words is "one hundred ninety-one million, six hundred eighty-one thousand, forty-six".