285942794191 has 4 divisors (see below), whose sum is σ = 285948130552. Its totient is φ = 285937457832.

The previous prime is 285942794153. The next prime is 285942794219. The reversal of 285942794191 is 191497249582.

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 285942794191 - 2¹⁹ = 285942269903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285942794101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2586981 + ... + 2695246.

It is an arithmetic number, because the mean of its divisors is an integer number (71487032638).

Almost surely, 2^285942794191 is an apocalyptic number.

285942794191 is a deficient number, since it is larger than the sum of its proper divisors (5336361).

285942794191 is an equidigital number, since it uses as much as digits as its factorization.

285942794191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5336360.

The product of its digits is 13063680, while the sum is 61.

The spelling of 285942794191 in words is "two hundred eighty-five billion, nine hundred forty-two million, seven hundred ninety-four thousand, one hundred ninety-one".