1646122162 has 4 divisors (see below), whose sum is σ = 2469183246. Its totient is φ = 823061080.

The previous prime is 1646122147. The next prime is 1646122183. The reversal of 1646122162 is 2612216461.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2612216461 = 739 ⋅3534799.

It can be written as a sum of positive squares in only one way, i.e., 1443316081 + 202806081 = 37991^2 + 14241^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411530539 + ... + 411530542.

Almost surely, 2^1646122162 is an apocalyptic number.

1646122162 is a deficient number, since it is larger than the sum of its proper divisors (823061084).

1646122162 is an equidigital number, since it uses as much as digits as its factorization.

1646122162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823061083.

The product of its digits is 6912, while the sum is 31.

The square root of 1646122162 is about 40572.4310585402. The cubic root of 1646122162 is about 1180.7393054508.

The spelling of 1646122162 in words is "one billion, six hundred forty-six million, one hundred twenty-two thousand, one hundred sixty-two".