512228194 has 4 divisors (see below), whose sum is σ = 768342294. Its totient is φ = 256114096.

The previous prime is 512228183. The next prime is 512228251. The reversal of 512228194 is 491822215.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 491822215 = 5 ⋅98364443.

It can be written as a sum of positive squares in only one way, i.e., 475806969 + 36421225 = 21813^2 + 6035^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128057047 + ... + 128057050.

Almost surely, 2^512228194 is an apocalyptic number.

512228194 is a deficient number, since it is larger than the sum of its proper divisors (256114100).

512228194 is a wasteful number, since it uses less digits than its factorization.

512228194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256114099.

The product of its digits is 11520, while the sum is 34.

The square root of 512228194 is about 22632.4588589044. The cubic root of 512228194 is about 800.1188333891.

The spelling of 512228194 in words is "five hundred twelve million, two hundred twenty-eight thousand, one hundred ninety-four".