78841159 has 2 divisors, whose sum is σ = 78841160. Its totient is φ = 78841158.

The previous prime is 78841109. The next prime is 78841163. The reversal of 78841159 is 95114887.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78841159 - 2²¹ = 76744007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78841109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39420579 + 39420580.

It is an arithmetic number, because the mean of its divisors is an integer number (39420580).

Almost surely, 2^78841159 is an apocalyptic number.

78841159 is a deficient number, since it is larger than the sum of its proper divisors (1).

78841159 is an equidigital number, since it uses as much as digits as its factorization.

78841159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 43.

The square root of 78841159 is about 8879.2544168979. The cubic root of 78841159 is about 428.7962711043.

The spelling of 78841159 in words is "seventy-eight million, eight hundred forty-one thousand, one hundred fifty-nine".