1127775197 has 4 divisors (see below), whose sum is σ = 1128029280. Its totient is φ = 1127521116.

The previous prime is 1127775179. The next prime is 1127775203. The reversal of 1127775197 is 7915777211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1127775197 - 2¹² = 1127771101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1127775127) 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, 120263 + ... + 129300.

It is an arithmetic number, because the mean of its divisors is an integer number (282007320).

Almost surely, 2^1127775197 is an apocalyptic number.

It is an amenable number.

1127775197 is a deficient number, since it is larger than the sum of its proper divisors (254083).

1127775197 is an equidigital number, since it uses as much as digits as its factorization.

1127775197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254082.

The product of its digits is 216090, while the sum is 47.

The square root of 1127775197 is about 33582.3643747727. The cubic root of 1127775197 is about 1040.8964155479.

The spelling of 1127775197 in words is "one billion, one hundred twenty-seven million, seven hundred seventy-five thousand, one hundred ninety-seven".