1646336361 has 8 divisors (see below), whose sum is σ = 2207243584. Its totient is φ = 1091493360.

The previous prime is 1646336333. The next prime is 1646336401. The reversal of 1646336361 is 1636336461.

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

It is not a de Polignac number, because 1646336361 - 2⁹ = 1646335849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1646336161) 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, 1515421 + ... + 1516506.

It is an arithmetic number, because the mean of its divisors is an integer number (275905448).

Almost surely, 2^1646336361 is an apocalyptic number.

It is an amenable number.

1646336361 is a deficient number, since it is larger than the sum of its proper divisors (560907223).

1646336361 is a wasteful number, since it uses less digits than its factorization.

1646336361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032111.

The product of its digits is 139968, while the sum is 39.

The square root of 1646336361 is about 40575.0706838571. The cubic root of 1646336361 is about 1180.7905171642.

The spelling of 1646336361 in words is "one billion, six hundred forty-six million, three hundred thirty-six thousand, three hundred sixty-one".