191994016 has 48 divisors (see below), whose sum is σ = 385862400. Its totient is φ = 94019328.

The previous prime is 191993983. The next prime is 191994079. The reversal of 191994016 is 610499191.

It is a self number, because there is not a number n which added to its sum of digits gives 191994016.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437125 + ... + 437563.

It is an arithmetic number, because the mean of its divisors is an integer number (8038800).

Almost surely, 2^191994016 is an apocalyptic number.

191994016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

191994016 is an abundant number, since it is smaller than the sum of its proper divisors (193868384).

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

191994016 is a wasteful number, since it uses less digits than its factorization.

191994016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701 (or 693 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 191994016 is about 13856.1905298679. The cubic root of 191994016 is about 576.8938347125.

The spelling of 191994016 in words is "one hundred ninety-one million, nine hundred ninety-four thousand, sixteen".