1982012323 has 4 divisors (see below), whose sum is σ = 1982708920. Its totient is φ = 1981315728.

The previous prime is 1982012321. The next prime is 1982012359. The reversal of 1982012323 is 3232102891.

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

It is a cyclic number.

It is not a de Polignac number, because 1982012323 - 2¹ = 1982012321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1982012321) 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, 344013 + ... + 349726.

It is an arithmetic number, because the mean of its divisors is an integer number (495677230).

Almost surely, 2^1982012323 is an apocalyptic number.

1982012323 is a deficient number, since it is larger than the sum of its proper divisors (696597).

1982012323 is an equidigital number, since it uses as much as digits as its factorization.

1982012323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696596.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1982012323 is about 44519.7969784230. The cubic root of 1982012323 is about 1256.1324937227.

The spelling of 1982012323 in words is "one billion, nine hundred eighty-two million, twelve thousand, three hundred twenty-three".