1345168217 has 4 divisors (see below), whose sum is σ = 1347260880. Its totient is φ = 1343075556.

The previous prime is 1345168211. The next prime is 1345168243. The reversal of 1345168217 is 7128615431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1345168217 - 2⁸ = 1345167961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1345168211) 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, 1045367 + ... + 1046652.

It is an arithmetic number, because the mean of its divisors is an integer number (336815220).

Almost surely, 2^1345168217 is an apocalyptic number.

It is an amenable number.

1345168217 is a deficient number, since it is larger than the sum of its proper divisors (2092663).

1345168217 is an equidigital number, since it uses as much as digits as its factorization.

1345168217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2092662.

The product of its digits is 40320, while the sum is 38.

The square root of 1345168217 is about 36676.5349644701. The cubic root of 1345168217 is about 1103.8893222140.

The spelling of 1345168217 in words is "one billion, three hundred forty-five million, one hundred sixty-eight thousand, two hundred seventeen".