1336747345 has 4 divisors (see below), whose sum is σ = 1604096820. Its totient is φ = 1069397872.

The previous prime is 1336747343. The next prime is 1336747361. The reversal of 1336747345 is 5437476331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5437476331 = 7 ⋅776782333.

It can be written as a sum of positive squares in 2 ways, for example, as 941691969 + 395055376 = 30687^2 + 19876^2 .

It is a cyclic number.

It is not a de Polignac number, because 1336747345 - 2¹ = 1336747343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1336747343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133674730 + ... + 133674739.

It is an arithmetic number, because the mean of its divisors is an integer number (401024205).

Almost surely, 2^1336747345 is an apocalyptic number.

It is an amenable number.

1336747345 is a deficient number, since it is larger than the sum of its proper divisors (267349475).

1336747345 is an equidigital number, since it uses as much as digits as its factorization.

1336747345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267349474.

The product of its digits is 635040, while the sum is 43.

The square root of 1336747345 is about 36561.5555604517. Note that the first 4 decimals coincide. The cubic root of 1336747345 is about 1101.5810171674.

The spelling of 1336747345 in words is "one billion, three hundred thirty-six million, seven hundred forty-seven thousand, three hundred forty-five".