75819493 has 2 divisors, whose sum is σ = 75819494. Its totient is φ = 75819492.

The previous prime is 75819461. The next prime is 75819517. The reversal of 75819493 is 39491857.

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., 75742209 + 77284 = 8703^2 + 278^2 .

It is a cyclic number.

It is not a de Polignac number, because 75819493 - 2⁵ = 75819461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75811493) 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, 37909746 + 37909747.

It is an arithmetic number, because the mean of its divisors is an integer number (37909747).

Almost surely, 2^75819493 is an apocalyptic number.

It is an amenable number.

75819493 is a deficient number, since it is larger than the sum of its proper divisors (1).

75819493 is an equidigital number, since it uses as much as digits as its factorization.

75819493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 46.

The square root of 75819493 is about 8707.4389460966. The cubic root of 75819493 is about 423.2467435412.

The spelling of 75819493 in words is "seventy-five million, eight hundred nineteen thousand, four hundred ninety-three".