205394146 has 4 divisors (see below), whose sum is σ = 308091222. Its totient is φ = 102697072.

The previous prime is 205394131. The next prime is 205394159. The reversal of 205394146 is 641493502.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 202635225 + 2758921 = 14235^2 + 1661^2 .

It is a super-2 number, since 2×205394146² = 84373510422138632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51348535 + ... + 51348538.

Almost surely, 2^205394146 is an apocalyptic number.

205394146 is a deficient number, since it is larger than the sum of its proper divisors (102697076).

205394146 is a wasteful number, since it uses less digits than its factorization.

205394146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102697075.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 205394146 is about 14331.5786290276. The cubic root of 205394146 is about 590.0145031387.

The spelling of 205394146 in words is "two hundred five million, three hundred ninety-four thousand, one hundred forty-six".