40994000191 has 4 divisors (see below), whose sum is σ = 41105700832. Its totient is φ = 40882299552.

The previous prime is 40994000189. The next prime is 40994000197. The reversal of 40994000191 is 19100049904.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40994000191 - 2¹ = 40994000189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40994000191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40994000197) 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, 55849770 + ... + 55850503.

It is an arithmetic number, because the mean of its divisors is an integer number (10276425208).

Almost surely, 2^40994000191 is an apocalyptic number.

40994000191 is a deficient number, since it is larger than the sum of its proper divisors (111700641).

40994000191 is a wasteful number, since it uses less digits than its factorization.

40994000191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111700640.

The product of its (nonzero) digits is 11664, while the sum is 37.

The spelling of 40994000191 in words is "forty billion, nine hundred ninety-four million, one hundred ninety-one", and thus it is an aban number.