1643346074 has 8 divisors (see below), whose sum is σ = 2550019860. Its totient is φ = 793339456.

The previous prime is 1643346059. The next prime is 1643346097. The reversal of 1643346074 is 4706433461.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1597201225 + 46144849 = 39965^2 + 6793^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14166719 + ... + 14166834.

Almost surely, 2^1643346074 is an apocalyptic number.

1643346074 is a deficient number, since it is larger than the sum of its proper divisors (906673786).

1643346074 is a wasteful number, since it uses less digits than its factorization.

1643346074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28333584.

The product of its (nonzero) digits is 145152, while the sum is 38.

The square root of 1643346074 is about 40538.2051156684. The cubic root of 1643346074 is about 1180.0751828952.

The spelling of 1643346074 in words is "one billion, six hundred forty-three million, three hundred forty-six thousand, seventy-four".