1317442945 has 16 divisors (see below), whose sum is σ = 1945762560. Its totient is φ = 833897664.

The previous prime is 1317442933. The next prime is 1317442963. The reversal of 1317442945 is 5492447131.

It is a cyclic number.

It is not a de Polignac number, because 1317442945 - 2⁷ = 1317442817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1317442898 and 1317442907.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1447285 + ... + 1448194.

It is an arithmetic number, because the mean of its divisors is an integer number (121610160).

Almost surely, 2^1317442945 is an apocalyptic number.

It is an amenable number.

1317442945 is a deficient number, since it is larger than the sum of its proper divisors (628319615).

1317442945 is a wasteful number, since it uses less digits than its factorization.

1317442945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2895504.

The product of its digits is 120960, while the sum is 40.

The square root of 1317442945 is about 36296.5968790464. The cubic root of 1317442945 is about 1096.2525216995.

It can be divided in two parts, 131744 and 2945, that added together give a square (134689 = 367²).

The spelling of 1317442945 in words is "one billion, three hundred seventeen million, four hundred forty-two thousand, nine hundred forty-five".