475649819 has 4 divisors (see below), whose sum is σ = 500684040. Its totient is φ = 450615600.

The previous prime is 475649813. The next prime is 475649831. The reversal of 475649819 is 918946574.

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

It is a cyclic number.

It is not a de Polignac number, because 475649819 - 2¹⁶ = 475584283 is a prime.

It is a super-2 number, since 2×475649819² = 452485500629465522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (475649813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12517082 + ... + 12517119.

It is an arithmetic number, because the mean of its divisors is an integer number (125171010).

Almost surely, 2^475649819 is an apocalyptic number.

475649819 is a deficient number, since it is larger than the sum of its proper divisors (25034221).

475649819 is a wasteful number, since it uses less digits than its factorization.

475649819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25034220.

The product of its digits is 2177280, while the sum is 53.

The square root of 475649819 is about 21809.3974928241. The cubic root of 475649819 is about 780.6010155210.

The spelling of 475649819 in words is "four hundred seventy-five million, six hundred forty-nine thousand, eight hundred nineteen".