75694189 has 2 divisors, whose sum is σ = 75694190. Its totient is φ = 75694188.

The previous prime is 75694187. The next prime is 75694231. The reversal of 75694189 is 98149657.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74684164 + 1010025 = 8642^2 + 1005^2 .

It is an emirp because it is prime and its reverse (98149657) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75694189 - 2¹ = 75694187 is a prime.

It is a super-2 number, since 2×75694189² = 11459220496735442, which contains 22 as substring.

Together with 75694187, 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 (75694181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37847094 + 37847095.

It is an arithmetic number, because the mean of its divisors is an integer number (37847095).

Almost surely, 2^75694189 is an apocalyptic number.

It is an amenable number.

75694189 is a deficient number, since it is larger than the sum of its proper divisors (1).

75694189 is an equidigital number, since it uses as much as digits as its factorization.

75694189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 49.

The square root of 75694189 is about 8700.2407437955. The cubic root of 75694189 is about 423.0134536982.

The spelling of 75694189 in words is "seventy-five million, six hundred ninety-four thousand, one hundred eighty-nine".