1345205145 has 8 divisors (see below), whose sum is σ = 2152328256. Its totient is φ = 717442736.

The previous prime is 1345205129. The next prime is 1345205159. The reversal of 1345205145 is 5415025431.

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

It is a cyclic number.

It is not a de Polignac number, because 1345205145 - 2⁴ = 1345205129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44840157 + ... + 44840186.

It is an arithmetic number, because the mean of its divisors is an integer number (269041032).

Almost surely, 2^1345205145 is an apocalyptic number.

1345205145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1345205145 is a deficient number, since it is larger than the sum of its proper divisors (807123111).

1345205145 is an equidigital number, since it uses as much as digits as its factorization.

1345205145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89680351.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 1345205145 is about 36677.0383891611. The cubic root of 1345205145 is about 1103.8994235657.

The spelling of 1345205145 in words is "one billion, three hundred forty-five million, two hundred five thousand, one hundred forty-five".