1273081982 has 4 divisors (see below), whose sum is σ = 1909622976. Its totient is φ = 636540990.

The previous prime is 1273081963. The next prime is 1273082011. The reversal of 1273081982 is 2891803721.

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

It is a congruent number.

It is an unprimeable number.

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, 318270494 + ... + 318270497.

It is an arithmetic number, because the mean of its divisors is an integer number (477405744).

Almost surely, 2^1273081982 is an apocalyptic number.

1273081982 is a deficient number, since it is larger than the sum of its proper divisors (636540994).

1273081982 is an equidigital number, since it uses as much as digits as its factorization.

1273081982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636540993.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 1273081982 is about 35680.2744103797. The cubic root of 1273081982 is about 1083.8074297203.

The spelling of 1273081982 in words is "one billion, two hundred seventy-three million, eighty-one thousand, nine hundred eighty-two".