1812635368 has 16 divisors (see below), whose sum is σ = 3419045280. Its totient is φ = 900889968.

The previous prime is 1812635327. The next prime is 1812635369. The reversal of 1812635368 is 8635362181.

It is not an unprimeable number, because it can be changed into a prime (1812635369) 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, 677046 + ... + 679717.

It is an arithmetic number, because the mean of its divisors is an integer number (213690330).

Almost surely, 2^1812635368 is an apocalyptic number.

It is an amenable number.

1812635368 is a deficient number, since it is larger than the sum of its proper divisors (1606409912).

1812635368 is a wasteful number, since it uses less digits than its factorization.

1812635368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356936 (or 1356932 counting only the distinct ones).

The product of its digits is 207360, while the sum is 43.

The square root of 1812635368 is about 42575.0557016664. The cubic root of 1812635368 is about 1219.2800930573.

The spelling of 1812635368 in words is "one billion, eight hundred twelve million, six hundred thirty-five thousand, three hundred sixty-eight".