82378159 has 2 divisors, whose sum is σ = 82378160. Its totient is φ = 82378158.

The previous prime is 82378151. The next prime is 82378181. The reversal of 82378159 is 95187328.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82378159 - 2³ = 82378151 is a prime.

It is a super-2 number, since 2×82378159² = 13572322160458562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82378151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41189079 + 41189080.

It is an arithmetic number, because the mean of its divisors is an integer number (41189080).

Almost surely, 2^82378159 is an apocalyptic number.

82378159 is a deficient number, since it is larger than the sum of its proper divisors (1).

82378159 is an equidigital number, since it uses as much as digits as its factorization.

82378159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 43.

The square root of 82378159 is about 9076.2414577842. The cubic root of 82378159 is about 435.1149720320.

The spelling of 82378159 in words is "eighty-two million, three hundred seventy-eight thousand, one hundred fifty-nine".