78193763 has 2 divisors, whose sum is σ = 78193764. Its totient is φ = 78193762.

The previous prime is 78193747. The next prime is 78193777. The reversal of 78193763 is 36739187.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78193763 - 2⁴ = 78193747 is a prime.

It is a super-2 number, since 2×78193763² = 12228529144200338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78193733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39096881 + 39096882.

It is an arithmetic number, because the mean of its divisors is an integer number (39096882).

Almost surely, 2^78193763 is an apocalyptic number.

78193763 is a deficient number, since it is larger than the sum of its proper divisors (1).

78193763 is an equidigital number, since it uses as much as digits as its factorization.

78193763 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 44.

The square root of 78193763 is about 8842.7237319731. The cubic root of 78193763 is about 427.6193718375.

The spelling of 78193763 in words is "seventy-eight million, one hundred ninety-three thousand, seven hundred sixty-three".