983042505 has 24 divisors (see below), whose sum is σ = 1706569800. Its totient is φ = 523480320.

The previous prime is 983042503. The next prime is 983042509. The reversal of 983042505 is 505240389.

It can be written as a sum of positive squares in 4 ways, for example, as 12595401 + 970447104 = 3549^2 + 31152^2 .

It is not a de Polignac number, because 983042505 - 2¹ = 983042503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 983042505.

It is not an unprimeable number, because it can be changed into a prime (983042503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13221 + ... + 46269.

It is an arithmetic number, because the mean of its divisors is an integer number (71107075).

Almost surely, 2^983042505 is an apocalyptic number.

983042505 is the 19830-th heptagonal number.

It is an amenable number.

983042505 is a deficient number, since it is larger than the sum of its proper divisors (723527295).

983042505 is a wasteful number, since it uses less digits than its factorization.

983042505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33721 (or 33718 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 983042505 is about 31353.5086553323. The cubic root of 983042505 is about 994.3152464811.

The spelling of 983042505 in words is "nine hundred eighty-three million, forty-two thousand, five hundred five".