1308609056 has 12 divisors (see below), whose sum is σ = 2576324142. Its totient is φ = 654304512.

The previous prime is 1308609053. The next prime is 1308609121. The reversal of 1308609056 is 6509068031.

It can be written as a sum of positive squares in only one way, i.e., 1304365456 + 4243600 = 36116^2 + 2060^2 .

It is a super-2 number, since 2×1308609056² = 3424915322890422272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1308609053) 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 as a sum of consecutive naturals, namely, 20446985 + ... + 20447048.

Almost surely, 2^1308609056 is an apocalyptic number.

1308609056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1308609056 is a deficient number, since it is larger than the sum of its proper divisors (1267715086).

1308609056 is an equidigital number, since it uses as much as digits as its factorization.

1308609056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40894043 (or 40894035 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 1308609056 is about 36174.7018785228. The cubic root of 1308609056 is about 1093.7967798615.

The spelling of 1308609056 in words is "one billion, three hundred eight million, six hundred nine thousand, fifty-six".