162644143 has 4 divisors (see below), whose sum is σ = 162676080. Its totient is φ = 162612208.

The previous prime is 162644129. The next prime is 162644149. The reversal of 162644143 is 341446261.

162644143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162644143 is a prime.

It is a super-3 number, since 3×162644143³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162644149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6430 + ... + 19147.

It is an arithmetic number, because the mean of its divisors is an integer number (40669020).

Almost surely, 2^162644143 is an apocalyptic number.

162644143 is a deficient number, since it is larger than the sum of its proper divisors (31937).

162644143 is an equidigital number, since it uses as much as digits as its factorization.

162644143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31936.

The product of its digits is 13824, while the sum is 31.

The square root of 162644143 is about 12753.2012843835. The cubic root of 162644143 is about 545.8577442507.

The spelling of 162644143 in words is "one hundred sixty-two million, six hundred forty-four thousand, one hundred forty-three".