1308286985 has 8 divisors (see below), whose sum is σ = 1570400136. Its totient is φ = 1046325760.

The previous prime is 1308286963. The next prime is 1308287011. The reversal of 1308286985 is 5896828031.

It can be written as a sum of positive squares in 4 ways, for example, as 44342281 + 1263944704 = 6659^2 + 35552^2 .

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

It is not a de Polignac number, because 1308286985 - 2⁶ = 1308286921 is a prime.

It is a super-2 number, since 2×1308286985² = 3423229670240780450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18086 + ... + 54255.

It is an arithmetic number, because the mean of its divisors is an integer number (196300017).

Almost surely, 2^1308286985 is an apocalyptic number.

It is an amenable number.

1308286985 is a deficient number, since it is larger than the sum of its proper divisors (262113151).

1308286985 is an equidigital number, since it uses as much as digits as its factorization.

1308286985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75963.

The product of its (nonzero) digits is 829440, while the sum is 50.

The square root of 1308286985 is about 36170.2499991360. The cubic root of 1308286985 is about 1093.7070384867.

The spelling of 1308286985 in words is "one billion, three hundred eight million, two hundred eighty-six thousand, nine hundred eighty-five".