1345250209 has 8 divisors (see below), whose sum is σ = 1381602240. Its totient is φ = 1309350000.

The previous prime is 1345250189. The next prime is 1345250279. The reversal of 1345250209 is 9020525431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1345250209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1345250279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106917 + ... + 118834.

It is an arithmetic number, because the mean of its divisors is an integer number (172700280).

Almost surely, 2^1345250209 is an apocalyptic number.

It is an amenable number.

1345250209 is a deficient number, since it is larger than the sum of its proper divisors (36352031).

1345250209 is a wasteful number, since it uses less digits than its factorization.

1345250209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225911.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 1345250209 is about 36677.6527193331. The cubic root of 1345250209 is about 1103.9117502031.

The spelling of 1345250209 in words is "one billion, three hundred forty-five million, two hundred fifty thousand, two hundred nine".