1813916068 has 12 divisors (see below), whose sum is σ = 3312368640. Its totient is φ = 867525032.

The previous prime is 1813916063. The next prime is 1813916081. The reversal of 1813916068 is 8606193181.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1813916063) 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, 9858148 + ... + 9858331.

It is an arithmetic number, because the mean of its divisors is an integer number (276030720).

Almost surely, 2^1813916068 is an apocalyptic number.

It is an amenable number.

1813916068 is a deficient number, since it is larger than the sum of its proper divisors (1498452572).

1813916068 is a wasteful number, since it uses less digits than its factorization.

1813916068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19716506 (or 19716504 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 1813916068 is about 42590.0935429825. The cubic root of 1813916068 is about 1219.5671823097.

The spelling of 1813916068 in words is "one billion, eight hundred thirteen million, nine hundred sixteen thousand, sixty-eight".