1820412323 has 4 divisors (see below), whose sum is σ = 1820687640. Its totient is φ = 1820137008.

The previous prime is 1820412317. The next prime is 1820412337. The reversal of 1820412323 is 3232140281.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1820412323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1820412292 and 1820412301.

It is not an unprimeable number, because it can be changed into a prime (1820412383) 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, 127490 + ... + 141047.

It is an arithmetic number, because the mean of its divisors is an integer number (455171910).

Almost surely, 2^1820412323 is an apocalyptic number.

1820412323 is a deficient number, since it is larger than the sum of its proper divisors (275317).

1820412323 is an equidigital number, since it uses as much as digits as its factorization.

1820412323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275316.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1820412323 is about 42666.2902418291. The cubic root of 1820412323 is about 1221.0213437318.

The spelling of 1820412323 in words is "one billion, eight hundred twenty million, four hundred twelve thousand, three hundred twenty-three".