191944732093 has 4 divisors (see below), whose sum is σ = 191949881760. Its totient is φ = 191939582428.

The previous prime is 191944732033. The next prime is 191944732121. The reversal of 191944732093 is 390237449191.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 390237449191 = 23 ⋅16966845617.

It is a cyclic number.

It is not a de Polignac number, because 191944732093 - 2¹⁷ = 191944601021 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 191944732093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191944732033) 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, 2518513 + ... + 2593606.

It is an arithmetic number, because the mean of its divisors is an integer number (47987470440).

Almost surely, 2^191944732093 is an apocalyptic number.

It is an amenable number.

191944732093 is a deficient number, since it is larger than the sum of its proper divisors (5149667).

191944732093 is an equidigital number, since it uses as much as digits as its factorization.

191944732093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5149666.

The product of its (nonzero) digits is 1469664, while the sum is 52.

The spelling of 191944732093 in words is "one hundred ninety-one billion, nine hundred forty-four million, seven hundred thirty-two thousand, ninety-three".