74836189 has 2 divisors, whose sum is σ = 74836190. Its totient is φ = 74836188.

The previous prime is 74836187. The next prime is 74836247. The reversal of 74836189 is 98163847.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74822500 + 13689 = 8650^2 + 117^2 .

It is an emirp because it is prime and its reverse (98163847) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74836189 - 2¹ = 74836187 is a prime.

Together with 74836187, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74836187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37418094 + 37418095.

It is an arithmetic number, because the mean of its divisors is an integer number (37418095).

Almost surely, 2^74836189 is an apocalyptic number.

It is an amenable number.

74836189 is a deficient number, since it is larger than the sum of its proper divisors (1).

74836189 is an equidigital number, since it uses as much as digits as its factorization.

74836189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 46.

The square root of 74836189 is about 8650.7912354882. The cubic root of 74836189 is about 421.4090787389.

The spelling of 74836189 in words is "seventy-four million, eight hundred thirty-six thousand, one hundred eighty-nine".