128153897 has 2 divisors, whose sum is σ = 128153898. Its totient is φ = 128153896.

The previous prime is 128153887. The next prime is 128153899. The reversal of 128153897 is 798351821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119486761 + 8667136 = 10931^2 + 2944^2 .

It is an emirp because it is prime and its reverse (798351821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128153897 - 2⁴ = 128153881 is a prime.

Together with 128153899, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (128153899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64076948 + 64076949.

It is an arithmetic number, because the mean of its divisors is an integer number (64076949).

Almost surely, 2^128153897 is an apocalyptic number.

It is an amenable number.

128153897 is a deficient number, since it is larger than the sum of its proper divisors (1).

128153897 is an equidigital number, since it uses as much as digits as its factorization.

128153897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 44.

The square root of 128153897 is about 11320.5078066313. The cubic root of 128153897 is about 504.1703162210.

The spelling of 128153897 in words is "one hundred twenty-eight million, one hundred fifty-three thousand, eight hundred ninety-seven".