474181866 has 24 divisors (see below), whose sum is σ = 1041470820. Its totient is φ = 155894976.

The previous prime is 474181861. The next prime is 474181891. The reversal of 474181866 is 668181474.

It can be written as a sum of positive squares in 2 ways, for example, as 447957225 + 26224641 = 21165^2 + 5121^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (474181861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 179121 + ... + 181748.

Almost surely, 2^474181866 is an apocalyptic number.

474181866 is an abundant number, since it is smaller than the sum of its proper divisors (567288954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

474181866 is a wasteful number, since it uses less digits than its factorization.

474181866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360950 (or 360947 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 474181866 is about 21775.7173475410. The cubic root of 474181866 is about 779.7971563268.

It can be divided in two parts, 47418 and 1866, that added together give a square (49284 = 222²).

The spelling of 474181866 in words is "four hundred seventy-four million, one hundred eighty-one thousand, eight hundred sixty-six".