1813944246 has 16 divisors (see below), whose sum is σ = 3628373184. Its totient is φ = 604567304.

The previous prime is 1813944173. The next prime is 1813944257. The reversal of 1813944246 is 6424493181.

It is a junction number, because it is equal to n+sod(n) for n = 1813944198 and 1813944207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44305 + ... + 74771.

It is an arithmetic number, because the mean of its divisors is an integer number (226773324).

Almost surely, 2^1813944246 is an apocalyptic number.

1813944246 is an abundant number, since it is smaller than the sum of its proper divisors (1814428938).

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

1813944246 is a wasteful number, since it uses less digits than its factorization.

1813944246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40395.

The product of its digits is 165888, while the sum is 42.

The square root of 1813944246 is about 42590.4243463246. The cubic root of 1813944246 is about 1219.5734973365.

The spelling of 1813944246 in words is "one billion, eight hundred thirteen million, nine hundred forty-four thousand, two hundred forty-six".