1285694313 has 8 divisors (see below), whose sum is σ = 1714826400. Its totient is φ = 856845888.

The previous prime is 1285694297. The next prime is 1285694317. The reversal of 1285694313 is 3134965821.

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

It is not a de Polignac number, because 1285694313 - 2⁴ = 1285694297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1285694317) 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 7 ways as a sum of consecutive naturals, for example, 60103 + ... + 78636.

It is an arithmetic number, because the mean of its divisors is an integer number (214353300).

Almost surely, 2^1285694313 is an apocalyptic number.

It is an amenable number.

1285694313 is a deficient number, since it is larger than the sum of its proper divisors (429132087).

1285694313 is a wasteful number, since it uses less digits than its factorization.

1285694313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141831.

The product of its digits is 155520, while the sum is 42.

The square root of 1285694313 is about 35856.5797727558. The cubic root of 1285694313 is about 1087.3747423973.

The spelling of 1285694313 in words is "one billion, two hundred eighty-five million, six hundred ninety-four thousand, three hundred thirteen".