1982281815 has 40 divisors (see below), whose sum is σ = 3590128080. Its totient is φ = 1046297088.

The previous prime is 1982281789. The next prime is 1982281867. The reversal of 1982281815 is 5181822891.

It is not a de Polignac number, because 1982281815 - 2⁷ = 1982281687 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 39 ways as a sum of consecutive naturals, for example, 14056 + ... + 64514.

It is an arithmetic number, because the mean of its divisors is an integer number (89753202).

Almost surely, 2^1982281815 is an apocalyptic number.

1982281815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1982281815 is a deficient number, since it is larger than the sum of its proper divisors (1607846265).

1982281815 is an equidigital number, since it uses as much as digits as its factorization.

1982281815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50573 (or 50564 counting only the distinct ones).

The product of its digits is 92160, while the sum is 45.

The square root of 1982281815 is about 44522.8235290620. The cubic root of 1982281815 is about 1256.1894227863.

The spelling of 1982281815 in words is "one billion, nine hundred eighty-two million, two hundred eighty-one thousand, eight hundred fifteen".