163405143 has 12 divisors (see below), whose sum is σ = 257487048. Its totient is φ = 99033360.

The previous prime is 163405097. The next prime is 163405163. The reversal of 163405143 is 341504361.

It is not a de Polignac number, because 163405143 - 2⁶ = 163405079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163405163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 825180 + ... + 825377.

It is an arithmetic number, because the mean of its divisors is an integer number (21457254).

Almost surely, 2^163405143 is an apocalyptic number.

163405143 is a deficient number, since it is larger than the sum of its proper divisors (94081905).

163405143 is a wasteful number, since it uses less digits than its factorization.

163405143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650574 (or 1650571 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 163405143 is about 12783.0021121801. The cubic root of 163405143 is about 546.7077626667.

The spelling of 163405143 in words is "one hundred sixty-three million, four hundred five thousand, one hundred forty-three".