1812208264 has 16 divisors (see below), whose sum is σ = 3398489820. Its totient is φ = 905944320.

The previous prime is 1812208259. The next prime is 1812208267. The reversal of 1812208264 is 4628022181.

It can be written as a sum of positive squares in 2 ways, for example, as 1812204900 + 3364 = 42570^2 + 58^2 .

It is not an unprimeable number, because it can be changed into a prime (1812208267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38172 + ... + 71284.

Almost surely, 2^1812208264 is an apocalyptic number.

It is an amenable number.

1812208264 is a deficient number, since it is larger than the sum of its proper divisors (1586281556).

1812208264 is a wasteful number, since it uses less digits than its factorization.

1812208264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39960 (or 39956 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 1812208264 is about 42570.0395113747. The cubic root of 1812208264 is about 1219.1843208425.

The spelling of 1812208264 in words is "one billion, eight hundred twelve million, two hundred eight thousand, two hundred sixty-four".