164503143 has 80 divisors (see below), whose sum is σ = 297369600. Its totient is φ = 90493200.

The previous prime is 164503123. The next prime is 164503189. The reversal of 164503143 is 341305461.

164503143 is a `hidden beast` number, since 1 + 645 + 0 + 3 + 14 + 3 = 666.

It is not a de Polignac number, because 164503143 - 2¹⁰ = 164502119 is a prime.

It is a super-2 number, since 2×164503143² = 54122568113756898, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164503103) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 861178 + ... + 861368.

It is an arithmetic number, because the mean of its divisors is an integer number (3717120).

Almost surely, 2^164503143 is an apocalyptic number.

164503143 is a deficient number, since it is larger than the sum of its proper divisors (132866457).

164503143 is an equidigital number, since it uses as much as digits as its factorization.

164503143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 232 counting only the distinct ones).

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

The square root of 164503143 is about 12825.8778646921. The cubic root of 164503143 is about 547.9295634246.

The spelling of 164503143 in words is "one hundred sixty-four million, five hundred three thousand, one hundred forty-three".