128275519 has 2 divisors, whose sum is σ = 128275520. Its totient is φ = 128275518.

The previous prime is 128275507. The next prime is 128275547. The reversal of 128275519 is 915572821.

It is a weak prime.

It is an emirp because it is prime and its reverse (915572821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128275519 - 2¹³ = 128267327 is a prime.

It is a super-2 number, since 2×128275519² = 32909217549438722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128275219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64137759 + 64137760.

It is an arithmetic number, because the mean of its divisors is an integer number (64137760).

Almost surely, 2^128275519 is an apocalyptic number.

128275519 is a deficient number, since it is larger than the sum of its proper divisors (1).

128275519 is an equidigital number, since it uses as much as digits as its factorization.

128275519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 40.

The square root of 128275519 is about 11325.8782882388. The cubic root of 128275519 is about 504.3297568524.

The spelling of 128275519 in words is "one hundred twenty-eight million, two hundred seventy-five thousand, five hundred nineteen".