1813229618 has 8 divisors (see below), whose sum is σ = 2807581440. Its totient is φ = 877369140.

The previous prime is 1813229549. The next prime is 1813229629. The reversal of 1813229618 is 8169223181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 14622758 + ... + 14622881.

It is an arithmetic number, because the mean of its divisors is an integer number (350947680).

Almost surely, 2^1813229618 is an apocalyptic number.

1813229618 is a deficient number, since it is larger than the sum of its proper divisors (994351822).

1813229618 is a wasteful number, since it uses less digits than its factorization.

1813229618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29245672.

The product of its digits is 41472, while the sum is 41.

The square root of 1813229618 is about 42582.0339814810. The cubic root of 1813229618 is about 1219.4133204461.

The spelling of 1813229618 in words is "one billion, eight hundred thirteen million, two hundred twenty-nine thousand, six hundred eighteen".