1285296513 has 8 divisors (see below), whose sum is σ = 1714539168. Its totient is φ = 856459104.

The previous prime is 1285296497. The next prime is 1285296527. The reversal of 1285296513 is 3156925821.

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

It is not a de Polignac number, because 1285296513 - 2⁴ = 1285296497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1285296613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93831 + ... + 106652.

It is an arithmetic number, because the mean of its divisors is an integer number (214317396).

Almost surely, 2^1285296513 is an apocalyptic number.

It is an amenable number.

1285296513 is a deficient number, since it is larger than the sum of its proper divisors (429242655).

1285296513 is a wasteful number, since it uses less digits than its factorization.

1285296513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202623.

The product of its digits is 129600, while the sum is 42.

The square root of 1285296513 is about 35851.0322445533. The cubic root of 1285296513 is about 1087.2625845053.

The spelling of 1285296513 in words is "one billion, two hundred eighty-five million, two hundred ninety-six thousand, five hundred thirteen".