1316533545 has 24 divisors (see below), whose sum is σ = 2287888200. Its totient is φ = 700336896.

The previous prime is 1316533529. The next prime is 1316533571. The reversal of 1316533545 is 5453356131.

1316533545 is a `hidden beast` number, since 1 + 316 + 5 + 335 + 4 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 246458601 + 1070074944 = 15699^2 + 32712^2 .

It is not a de Polignac number, because 1316533545 - 2⁴ = 1316533529 is a prime.

It is a super-2 number, since 2×1316533545² = 3466521150220534050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20100 + ... + 55109.

It is an arithmetic number, because the mean of its divisors is an integer number (95328675).

Almost surely, 2^1316533545 is an apocalyptic number.

1316533545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1316533545 is a deficient number, since it is larger than the sum of its proper divisors (971354655).

1316533545 is a wasteful number, since it uses less digits than its factorization.

1316533545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75609 (or 75606 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

The square root of 1316533545 is about 36284.0673712306. The cubic root of 1316533545 is about 1096.0002244947. Note that the first 3 decimals are identical.

Adding to 1316533545 its reverse (5453356131), we get a palindrome (6769889676).

The spelling of 1316533545 in words is "one billion, three hundred sixteen million, five hundred thirty-three thousand, five hundred forty-five".