2145346643 has 8 divisors (see below), whose sum is σ = 2442134016. Its totient is φ = 1865518600.

The previous prime is 2145346627. The next prime is 2145346657. The reversal of 2145346643 is 3466435412.

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

It is not a de Polignac number, because 2145346643 - 2⁴ = 2145346627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2145346597 and 2145346606.

It is not an unprimeable number, because it can be changed into a prime (2145346663) 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, 4239563 + ... + 4240068.

It is an arithmetic number, because the mean of its divisors is an integer number (305266752).

Almost surely, 2^2145346643 is an apocalyptic number.

2145346643 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2145346643 is a deficient number, since it is larger than the sum of its proper divisors (296787373).

2145346643 is a wasteful number, since it uses less digits than its factorization.

2145346643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8479665.

The product of its digits is 207360, while the sum is 38.

The square root of 2145346643 is about 46317.8868581027. The cubic root of 2145346643 is about 1289.7310584508.

The spelling of 2145346643 in words is "two billion, one hundred forty-five million, three hundred forty-six thousand, six hundred forty-three".