1345645323 has 24 divisors (see below), whose sum is σ = 2123808960. Its totient is φ = 814235760.

The previous prime is 1345645313. The next prime is 1345645333. The reversal of 1345645323 is 3235465431.

1345645323 is a `hidden beast` number, since 1 + 3 + 4 + 5 + 645 + 3 + 2 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (1345645313) and next prime (1345645333).

It is not a de Polignac number, because 1345645323 - 2⁴ = 1345645307 is a prime.

It is a super-2 number, since 2×1345645323² = 3621522670623548658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1345645313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53088 + ... + 74226.

It is an arithmetic number, because the mean of its divisors is an integer number (88492040).

Almost surely, 2^1345645323 is an apocalyptic number.

1345645323 is a deficient number, since it is larger than the sum of its proper divisors (778163637).

1345645323 is a wasteful number, since it uses less digits than its factorization.

1345645323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21799 (or 21796 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

The square root of 1345645323 is about 36683.0386282271. The cubic root of 1345645323 is about 1104.0198164173.

The spelling of 1345645323 in words is "one billion, three hundred forty-five million, six hundred forty-five thousand, three hundred twenty-three".