128178319 has 2 divisors, whose sum is σ = 128178320. Its totient is φ = 128178318.

The previous prime is 128178307. The next prime is 128178331. The reversal of 128178319 is 913871821.

It is a balanced prime because it is at equal distance from previous prime (128178307) and next prime (128178331).

It is a cyclic number.

It is not a de Polignac number, because 128178319 - 2¹¹ = 128176271 is a prime.

It is a super-2 number, since 2×128178319² = 32859362923331522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128178719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64089159 + 64089160.

It is an arithmetic number, because the mean of its divisors is an integer number (64089160).

Almost surely, 2^128178319 is an apocalyptic number.

128178319 is a deficient number, since it is larger than the sum of its proper divisors (1).

128178319 is an equidigital number, since it uses as much as digits as its factorization.

128178319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 40.

The square root of 128178319 is about 11321.5864171060. The cubic root of 128178319 is about 504.2023403880.

The spelling of 128178319 in words is "one hundred twenty-eight million, one hundred seventy-eight thousand, three hundred nineteen".