1336688945 has 4 divisors (see below), whose sum is σ = 1604026740. Its totient is φ = 1069351152.

The previous prime is 1336688939. The next prime is 1336688957. The reversal of 1336688945 is 5498866331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 953821456 + 382867489 = 30884^2 + 19567^2 .

It is a cyclic number.

It is not a de Polignac number, because 1336688945 - 2²² = 1332494641 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133668890 + ... + 133668899.

It is an arithmetic number, because the mean of its divisors is an integer number (401006685).

Almost surely, 2^1336688945 is an apocalyptic number.

It is an amenable number.

1336688945 is a deficient number, since it is larger than the sum of its proper divisors (267337795).

1336688945 is an equidigital number, since it uses as much as digits as its factorization.

1336688945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267337794.

The product of its digits is 3732480, while the sum is 53.

The square root of 1336688945 is about 36560.7568986201. The cubic root of 1336688945 is about 1101.5649749266.

The spelling of 1336688945 in words is "one billion, three hundred thirty-six million, six hundred eighty-eight thousand, nine hundred forty-five".