1215153982 has 32 divisors (see below), whose sum is σ = 2259472320. Its totient is φ = 478187520.

The previous prime is 1215153959. The next prime is 1215153991. The reversal of 1215153982 is 2893515121.

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 in 15 ways as a sum of consecutive naturals, for example, 52507 + ... + 72022.

It is an arithmetic number, because the mean of its divisors is an integer number (70608510).

Almost surely, 2^1215153982 is an apocalyptic number.

1215153982 is a deficient number, since it is larger than the sum of its proper divisors (1044318338).

1215153982 is a wasteful number, since it uses less digits than its factorization.

1215153982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124596.

The product of its digits is 21600, while the sum is 37.

The square root of 1215153982 is about 34859.0588226360. The cubic root of 1215153982 is about 1067.1130674301.

The spelling of 1215153982 in words is "one billion, two hundred fifteen million, one hundred fifty-three thousand, nine hundred eighty-two".