127795819 has 4 divisors (see below), whose sum is σ = 127928944. Its totient is φ = 127662696.

The previous prime is 127795807. The next prime is 127795823. The reversal of 127795819 is 918597721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 127795819 - 2¹⁹ = 127271531 is a prime.

It is a super-2 number, since 2×127795819² = 32663542707761522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127795859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65112 + ... + 67045.

It is an arithmetic number, because the mean of its divisors is an integer number (31982236).

Almost surely, 2^127795819 is an apocalyptic number.

127795819 is a deficient number, since it is larger than the sum of its proper divisors (133125).

127795819 is an equidigital number, since it uses as much as digits as its factorization.

127795819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133124.

The product of its digits is 317520, while the sum is 49.

The square root of 127795819 is about 11304.6812869713. The cubic root of 127795819 is about 503.7003065750.

The spelling of 127795819 in words is "one hundred twenty-seven million, seven hundred ninety-five thousand, eight hundred nineteen".