1308489845 has 16 divisors (see below), whose sum is σ = 1707722352. Its totient is φ = 956697600.

The previous prime is 1308489841. The next prime is 1308489859. The reversal of 1308489845 is 5489848031.

It can be written as a sum of positive squares in 8 ways, for example, as 22335076 + 1286154769 = 4726^2 + 35863^2 .

It is not a de Polignac number, because 1308489845 - 2² = 1308489841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1308489793 and 1308489802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1308489841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93092 + ... + 106221.

It is an arithmetic number, because the mean of its divisors is an integer number (106732647).

Almost surely, 2^1308489845 is an apocalyptic number.

It is an amenable number.

1308489845 is a deficient number, since it is larger than the sum of its proper divisors (399232507).

1308489845 is a wasteful number, since it uses less digits than its factorization.

1308489845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199432.

The product of its (nonzero) digits is 1105920, while the sum is 50.

The square root of 1308489845 is about 36173.0541287296. The cubic root of 1308489845 is about 1093.7635648059.

The spelling of 1308489845 in words is "one billion, three hundred eight million, four hundred eighty-nine thousand, eight hundred forty-five".