1313540745 has 16 divisors (see below), whose sum is σ = 2292725952. Its totient is φ = 636868160.

The previous prime is 1313540713. The next prime is 1313540749. The reversal of 1313540745 is 5470453131.

It is not a de Polignac number, because 1313540745 - 2⁵ = 1313540713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1313540749) 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 15 ways as a sum of consecutive naturals, for example, 3980262 + ... + 3980591.

It is an arithmetic number, because the mean of its divisors is an integer number (143295372).

Almost surely, 2^1313540745 is an apocalyptic number.

1313540745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1313540745 is a deficient number, since it is larger than the sum of its proper divisors (979185207).

1313540745 is a wasteful number, since it uses less digits than its factorization.

1313540745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7960872.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 1313540745 is about 36242.8026648050. The cubic root of 1313540745 is about 1095.1691029678.

Adding to 1313540745 its reverse (5470453131), we get a palindrome (6783993876).

The spelling of 1313540745 in words is "one billion, three hundred thirteen million, five hundred forty thousand, seven hundred forty-five".