76318493 has 2 divisors, whose sum is σ = 76318494. Its totient is φ = 76318492.

The previous prime is 76318471. The next prime is 76318513. The reversal of 76318493 is 39481367.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69672409 + 6646084 = 8347^2 + 2578^2 .

It is an emirp because it is prime and its reverse (39481367) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76318493 - 2²⁰ = 75269917 is a prime.

It is a super-3 number, since 3×76318493³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 76318493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76318433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38159246 + 38159247.

It is an arithmetic number, because the mean of its divisors is an integer number (38159247).

Almost surely, 2^76318493 is an apocalyptic number.

It is an amenable number.

76318493 is a deficient number, since it is larger than the sum of its proper divisors (1).

76318493 is an equidigital number, since it uses as much as digits as its factorization.

76318493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 41.

The square root of 76318493 is about 8736.0456157234. The cubic root of 76318493 is about 424.1732356216.

The spelling of 76318493 in words is "seventy-six million, three hundred eighteen thousand, four hundred ninety-three".