1285082613 has 24 divisors (see below), whose sum is σ = 1962097280. Its totient is φ = 808237440.

The previous prime is 1285082567. The next prime is 1285082627. The reversal of 1285082613 is 3162805821.

It is a happy number.

1285082613 is a `hidden beast` number, since 128 + 508 + 26 + 1 + 3 = 666.

It is not a de Polignac number, because 1285082613 - 2⁶ = 1285082549 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285082633) 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 23 ways as a sum of consecutive naturals, for example, 25620 + ... + 56802.

Almost surely, 2^1285082613 is an apocalyptic number.

It is an amenable number.

1285082613 is a deficient number, since it is larger than the sum of its proper divisors (677014667).

1285082613 is a wasteful number, since it uses less digits than its factorization.

1285082613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31449 (or 31446 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 1285082613 is about 35848.0489427249. The cubic root of 1285082613 is about 1087.2022668102.

The spelling of 1285082613 in words is "one billion, two hundred eighty-five million, eighty-two thousand, six hundred thirteen".