1813929318 has 12 divisors (see below), whose sum is σ = 3930180228. Its totient is φ = 604643100.

The previous prime is 1813929307. The next prime is 1813929347. The reversal of 1813929318 is 8139293181.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50386908 + ... + 50386943.

It is an arithmetic number, because the mean of its divisors is an integer number (327515019).

Almost surely, 2^1813929318 is an apocalyptic number.

1813929318 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1813929318 is an abundant number, since it is smaller than the sum of its proper divisors (2116250910).

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

1813929318 is a wasteful number, since it uses less digits than its factorization.

1813929318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100773859 (or 100773856 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 1813929318 is about 42590.2490953035. The cubic root of 1813929318 is about 1219.5701518013.

The spelling of 1813929318 in words is "one billion, eight hundred thirteen million, nine hundred twenty-nine thousand, three hundred eighteen".