191964245 has 16 divisors (see below), whose sum is σ = 259407360. Its totient is φ = 135105600.

The previous prime is 191964211. The next prime is 191964247. The reversal of 191964245 is 542469191.

It is not a de Polignac number, because 191964245 - 2¹⁶ = 191898709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191964247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54590 + ... + 57999.

It is an arithmetic number, because the mean of its divisors is an integer number (16212960).

Almost surely, 2^191964245 is an apocalyptic number.

It is an amenable number.

191964245 is a deficient number, since it is larger than the sum of its proper divisors (67443115).

191964245 is a wasteful number, since it uses less digits than its factorization.

191964245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112636.

The product of its digits is 77760, while the sum is 41.

The square root of 191964245 is about 13855.1162030493. The cubic root of 191964245 is about 576.8640150433.

The spelling of 191964245 in words is "one hundred ninety-one million, nine hundred sixty-four thousand, two hundred forty-five".