71149193 has 2 divisors, whose sum is σ = 71149194. Its totient is φ = 71149192.

The previous prime is 71149163. The next prime is 71149201. The reversal of 71149193 is 39194117.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57957769 + 13191424 = 7613^2 + 3632^2 .

It is an emirp because it is prime and its reverse (39194117) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71149193 is a prime.

It is equal to p_4181669 and since 71149193 and 4181669 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (71149163) 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, 35574596 + 35574597.

It is an arithmetic number, because the mean of its divisors is an integer number (35574597).

Almost surely, 2^71149193 is an apocalyptic number.

It is an amenable number.

71149193 is a deficient number, since it is larger than the sum of its proper divisors (1).

71149193 is an equidigital number, since it uses as much as digits as its factorization.

71149193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 35.

The square root of 71149193 is about 8434.9981031415. The cubic root of 71149193 is about 414.3716100646.

The spelling of 71149193 in words is "seventy-one million, one hundred forty-nine thousand, one hundred ninety-three".