191443794 has 16 divisors (see below), whose sum is σ = 383113920. Its totient is φ = 63776880.

The previous prime is 191443787. The next prime is 191443799. The reversal of 191443794 is 497344191.

191443794 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×191443794² = 73301452522228872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (191443799) 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, 2784 + ... + 19764.

It is an arithmetic number, because the mean of its divisors is an integer number (23944620).

Almost surely, 2^191443794 is an apocalyptic number.

191443794 is an abundant number, since it is smaller than the sum of its proper divisors (191670126).

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

191443794 is a wasteful number, since it uses less digits than its factorization.

191443794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18865.

The product of its digits is 108864, while the sum is 42.

The square root of 191443794 is about 13836.3215487354. The cubic root of 191443794 is about 576.3422144184.

The spelling of 191443794 in words is "one hundred ninety-one million, four hundred forty-three thousand, seven hundred ninety-four".