285196166 has 4 divisors (see below), whose sum is σ = 427794252. Its totient is φ = 142598082.

The previous prime is 285196157. The next prime is 285196183. The reversal of 285196166 is 661691582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 661691582 = 2 ⋅330845791.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 71299040 + ... + 71299043.

It is an arithmetic number, because the mean of its divisors is an integer number (106948563).

Almost surely, 2^285196166 is an apocalyptic number.

285196166 is a deficient number, since it is larger than the sum of its proper divisors (142598086).

285196166 is a wasteful number, since it uses less digits than its factorization.

285196166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142598085.

The product of its digits is 155520, while the sum is 44.

The square root of 285196166 is about 16887.7519522286. The cubic root of 285196166 is about 658.2353887866.

The spelling of 285196166 in words is "two hundred eighty-five million, one hundred ninety-six thousand, one hundred sixty-six".