1282581215 has 8 divisors (see below), whose sum is σ = 1539505968. Its totient is φ = 1025792640.

The previous prime is 1282581211. The next prime is 1282581271. The reversal of 1282581215 is 5121852821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1282581215 - 2² = 1282581211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1282581211) 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 in 7 ways as a sum of consecutive naturals, for example, 12026 + ... + 52055.

It is an arithmetic number, because the mean of its divisors is an integer number (192438246).

Almost surely, 2^1282581215 is an apocalyptic number.

1282581215 is a deficient number, since it is larger than the sum of its proper divisors (256924753).

1282581215 is an equidigital number, since it uses as much as digits as its factorization.

1282581215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68089.

The product of its digits is 12800, while the sum is 35.

The square root of 1282581215 is about 35813.1430483279. The cubic root of 1282581215 is about 1086.4963998704.

The spelling of 1282581215 in words is "one billion, two hundred eighty-two million, five hundred eighty-one thousand, two hundred fifteen".