285782191396 has 81 divisors (see below), whose sum is σ = 561659011641. Its totient is φ = 127171594368.

The previous prime is 285782191381. The next prime is 285782191441. The reversal of 285782191396 is 693191287582.

The square root of 285782191396 is 534586.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 285765084900 + 17106496 = 534570^2 + 4136^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 403077490 + ... + 403078198.

Almost surely, 2^285782191396 is an apocalyptic number.

285782191396 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

285782191396 is the 534586-th square number.

It is an amenable number.

285782191396 is a deficient number, since it is larger than the sum of its proper divisors (275876820245).

285782191396 is an equidigital number, since it uses as much as digits as its factorization.

285782191396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506 (or 753 counting only the distinct ones).

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

The spelling of 285782191396 in words is "two hundred eighty-five billion, seven hundred eighty-two million, one hundred ninety-one thousand, three hundred ninety-six".