205071494 has 8 divisors (see below), whose sum is σ = 307923120. Its totient is φ = 102430456.

The previous prime is 205071457. The next prime is 205071509. The reversal of 205071494 is 494170502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 205071494.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50189 + ... + 54120.

It is an arithmetic number, because the mean of its divisors is an integer number (38490390).

Almost surely, 2^205071494 is an apocalyptic number.

205071494 is a deficient number, since it is larger than the sum of its proper divisors (102851626).

205071494 is a wasteful number, since it uses less digits than its factorization.

205071494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105294.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 205071494 is about 14320.3175244126. The cubic root of 205071494 is about 589.7053915541.

The spelling of 205071494 in words is "two hundred five million, seventy-one thousand, four hundred ninety-four".