128582413 has 2 divisors, whose sum is σ = 128582414. Its totient is φ = 128582412.

The previous prime is 128582411. The next prime is 128582431. The reversal of 128582413 is 314285821.

It is a happy number.

Together with next prime (128582431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73496329 + 55086084 = 8573^2 + 7422^2 .

It is a cyclic number.

It is not a de Polignac number, because 128582413 - 2¹ = 128582411 is a prime.

Together with 128582411, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128582411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64291206 + 64291207.

It is an arithmetic number, because the mean of its divisors is an integer number (64291207).

Almost surely, 2^128582413 is an apocalyptic number.

It is an amenable number.

128582413 is a deficient number, since it is larger than the sum of its proper divisors (1).

128582413 is an equidigital number, since it uses as much as digits as its factorization.

128582413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15360, while the sum is 34.

The square root of 128582413 is about 11339.4185477034. The cubic root of 128582413 is about 504.7316327256.

The spelling of 128582413 in words is "one hundred twenty-eight million, five hundred eighty-two thousand, four hundred thirteen".