1230999982 has 4 divisors (see below), whose sum is σ = 1846499976. Its totient is φ = 615499990.

The previous prime is 1230999977. The next prime is 1230999989. The reversal of 1230999982 is 2899990321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2899990321 = 2767 ⋅1048063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230999989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307749994 + ... + 307749997.

It is an arithmetic number, because the mean of its divisors is an integer number (461624994).

Almost surely, 2^1230999982 is an apocalyptic number.

1230999982 is a deficient number, since it is larger than the sum of its proper divisors (615499994).

1230999982 is an equidigital number, since it uses as much as digits as its factorization.

1230999982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615499993.

The product of its (nonzero) digits is 629856, while the sum is 52.

The square root of 1230999982 is about 35085.6093291822. The cubic root of 1230999982 is about 1071.7315493010.

The spelling of 1230999982 in words is "one billion, two hundred thirty million, nine hundred ninety-nine thousand, nine hundred eighty-two".