1807945812 has 48 divisors (see below), whose sum is σ = 4689558720. Its totient is φ = 602354016.

The previous prime is 1807945807. The next prime is 1807945819. The reversal of 1807945812 is 2185497081.

1807945812 is a `hidden beast` number, since 180 + 7 + 9 + 458 + 12 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1807945819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 432838 + ... + 436994.

It is an arithmetic number, because the mean of its divisors is an integer number (97699140).

Almost surely, 2^1807945812 is an apocalyptic number.

1807945812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1807945812 is an abundant number, since it is smaller than the sum of its proper divisors (2881612908).

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

1807945812 is a wasteful number, since it uses less digits than its factorization.

1807945812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8197 (or 8189 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 1807945812 is about 42519.9460488839. The cubic root of 1807945812 is about 1218.2276989430.

The spelling of 1807945812 in words is "one billion, eight hundred seven million, nine hundred forty-five thousand, eight hundred twelve".