78361163 has 2 divisors, whose sum is σ = 78361164. Its totient is φ = 78361162.

The previous prime is 78361141. The next prime is 78361183. The reversal of 78361163 is 36116387.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78361163 - 2²⁶ = 11252299 is a prime.

It is a super-2 number, since 2×78361163² = 12280943733425138, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78361183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39180581 + 39180582.

It is an arithmetic number, because the mean of its divisors is an integer number (39180582).

Almost surely, 2^78361163 is an apocalyptic number.

78361163 is a deficient number, since it is larger than the sum of its proper divisors (1).

78361163 is an equidigital number, since it uses as much as digits as its factorization.

78361163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 78361163 is about 8852.1840807792. The cubic root of 78361163 is about 427.9243086080.

The spelling of 78361163 in words is "seventy-eight million, three hundred sixty-one thousand, one hundred sixty-three".