1127964197 has 4 divisors (see below), whose sum is σ = 1130411436. Its totient is φ = 1125516960.

The previous prime is 1127964163. The next prime is 1127964217. The reversal of 1127964197 is 7914697211.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 487570561 + 640393636 = 22081^2 + 25306^2 .

It is a cyclic number.

It is not a de Polignac number, because 1127964197 - 2¹⁴ = 1127947813 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 (1127966197) 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, 1222928 + ... + 1223849.

It is an arithmetic number, because the mean of its divisors is an integer number (282602859).

Almost surely, 2^1127964197 is an apocalyptic number.

It is an amenable number.

1127964197 is a deficient number, since it is larger than the sum of its proper divisors (2447239).

1127964197 is an equidigital number, since it uses as much as digits as its factorization.

1127964197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447238.

The product of its digits is 190512, while the sum is 47.

The square root of 1127964197 is about 33585.1782338579. The cubic root of 1127964197 is about 1040.9545590604.

The spelling of 1127964197 in words is "one billion, one hundred twenty-seven million, nine hundred sixty-four thousand, one hundred ninety-seven".