1642163 has 4 divisors (see below), whose sum is σ = 1695168. Its totient is φ = 1589160.

The previous prime is 1642153. The next prime is 1642187. The reversal of 1642163 is 3612461.

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: 3612461 = 31 ⋅116531.

It is a cyclic number.

It is not a de Polignac number, because 1642163 - 2⁸ = 1641907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1642153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26456 + ... + 26517.

It is an arithmetic number, because the mean of its divisors is an integer number (423792).

2^1642163 is an apocalyptic number.

1642163 is a deficient number, since it is larger than the sum of its proper divisors (53005).

1642163 is an equidigital number, since it uses as much as digits as its factorization.

1642163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53004.

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

The square root of 1642163 is about 1281.4690788310. The cubic root of 1642163 is about 117.9791929223.

The spelling of 1642163 in words is "one million, six hundred forty-two thousand, one hundred sixty-three".