1812869330 has 8 divisors (see below), whose sum is σ = 3263164812. Its totient is φ = 725147728.

The previous prime is 1812869329. The next prime is 1812869339. The reversal of 1812869330 is 339682181.

It can be written as a sum of positive squares in 2 ways, for example, as 1682886529 + 129982801 = 41023^2 + 11401^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1812869339) by changing a digit.

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, 90643457 + ... + 90643476.

Almost surely, 2^1812869330 is an apocalyptic number.

1812869330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1812869330 is a deficient number, since it is larger than the sum of its proper divisors (1450295482).

1812869330 is a wasteful number, since it uses less digits than its factorization.

1812869330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181286940.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 1812869330 is about 42577.8032547477. The cubic root of 1812869330 is about 1219.3325494498.

The spelling of 1812869330 in words is "one billion, eight hundred twelve million, eight hundred sixty-nine thousand, three hundred thirty".