78163 has 2 divisors, whose sum is σ = 78164. Its totient is φ = 78162.

The previous prime is 78157. The next prime is 78167. The reversal of 78163 is 36187.

It is a strong prime.

It is an emirp because it is prime and its reverse (36187) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78163 is a prime.

It is a super-2 number, since 2×78163² = 12218909138, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is equal to p₇₆₇₅ and since 78163 and 7675 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 (78167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39081 + 39082.

It is an arithmetic number, because the mean of its divisors is an integer number (39082).

78163 is a Friedman number, since it can be written as 38+(6-1)^7, using all its digits and the basic arithmetic operations.

2⁷⁸¹⁶³ is an apocalyptic number.

78163 is a deficient number, since it is larger than the sum of its proper divisors (1).

78163 is an equidigital number, since it uses as much as digits as its factorization.

78163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 25.

The square root of 78163 is about 279.5764653901. The cubic root of 78163 is about 42.7563286460.

The spelling of 78163 in words is "seventy-eight thousand, one hundred sixty-three".