74128163 has 2 divisors, whose sum is σ = 74128164. Its totient is φ = 74128162.

The previous prime is 74128157. The next prime is 74128183. The reversal of 74128163 is 36182147.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74128163 - 2²² = 69933859 is a prime.

It is not a weakly prime, because it can be changed into another prime (74128133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37064081 + 37064082.

It is an arithmetic number, because the mean of its divisors is an integer number (37064082).

Almost surely, 2^74128163 is an apocalyptic number.

74128163 is a deficient number, since it is larger than the sum of its proper divisors (1).

74128163 is an equidigital number, since it uses as much as digits as its factorization.

74128163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 32.

The square root of 74128163 is about 8609.7713674638. The cubic root of 74128163 is about 420.0758800921.

The spelling of 74128163 in words is "seventy-four million, one hundred twenty-eight thousand, one hundred sixty-three".