1646385168 has 20 divisors (see below), whose sum is σ = 4253161808. Its totient is φ = 548795040.

The previous prime is 1646385151. The next prime is 1646385193. The reversal of 1646385168 is 8615836461.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 34299691 = 1646385168 / (1 + 6 + 4 + 6 + 3 + 8 + 5 + 1 + 6 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17149798 + ... + 17149893.

Almost surely, 2^1646385168 is an apocalyptic number.

It is an amenable number.

1646385168 is an abundant number, since it is smaller than the sum of its proper divisors (2606776640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1646385168 is a wasteful number, since it uses less digits than its factorization.

1646385168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34299702 (or 34299696 counting only the distinct ones).

The product of its digits is 829440, while the sum is 48.

The square root of 1646385168 is about 40575.6721201264. The cubic root of 1646385168 is about 1180.8021855520.

The spelling of 1646385168 in words is "one billion, six hundred forty-six million, three hundred eighty-five thousand, one hundred sixty-eight".