1643162 has 8 divisors (see below), whose sum is σ = 2480916. Its totient is φ = 816192.

The previous prime is 1643141. The next prime is 1643171. The reversal of 1643162 is 2613461.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1585081 + 58081 = 1259^2 + 241^2 .

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

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, 2303 + ... + 2930.

2^1643162 is an apocalyptic number.

1643162 is a deficient number, since it is larger than the sum of its proper divisors (837754).

1643162 is a wasteful number, since it uses less digits than its factorization.

1643162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5392.

The product of its digits is 864, while the sum is 23.

The square root of 1643162 is about 1281.8588065774. The cubic root of 1643162 is about 118.0031120505.

Subtracting 1643162 from its reverse (2613461), we obtain a cube (970299 = 99³).

The spelling of 1643162 in words is "one million, six hundred forty-three thousand, one hundred sixty-two".