1345452643 has 8 divisors (see below), whose sum is σ = 1477843200. Its totient is φ = 1219219848.

The previous prime is 1345452637. The next prime is 1345452649. The reversal of 1345452643 is 3462545431.

It is an interprime number because it is at equal distance from previous prime (1345452637) and next prime (1345452649).

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 1345452643 - 2²¹ = 1343355491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1345452649) 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, 1538983 + ... + 1539856.

It is an arithmetic number, because the mean of its divisors is an integer number (184730400).

Almost surely, 2^1345452643 is an apocalyptic number.

1345452643 is a deficient number, since it is larger than the sum of its proper divisors (132390557).

1345452643 is a wasteful number, since it uses less digits than its factorization.

1345452643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3078881.

The product of its digits is 172800, while the sum is 37.

The square root of 1345452643 is about 36680.4122523180. The cubic root of 1345452643 is about 1103.9671198440.

The spelling of 1345452643 in words is "one billion, three hundred forty-five million, four hundred fifty-two thousand, six hundred forty-three".