1127525989 has 4 divisors (see below), whose sum is σ = 1130204620. Its totient is φ = 1124847360.

The previous prime is 1127525981. The next prime is 1127526041. The reversal of 1127525989 is 9895257211.

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 296184100 + 831341889 = 17210^2 + 28833^2 .

It is a cyclic number.

It is not a de Polignac number, because 1127525989 - 2³ = 1127525981 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 (1127525981) 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, 1338684 + ... + 1339525.

It is an arithmetic number, because the mean of its divisors is an integer number (282551155).

Almost surely, 2^1127525989 is an apocalyptic number.

It is an amenable number.

1127525989 is a deficient number, since it is larger than the sum of its proper divisors (2678631).

1127525989 is an equidigital number, since it uses as much as digits as its factorization.

1127525989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2678630.

The product of its digits is 453600, while the sum is 49.

The square root of 1127525989 is about 33578.6537699176. The cubic root of 1127525989 is about 1040.8197398582.

The spelling of 1127525989 in words is "one billion, one hundred twenty-seven million, five hundred twenty-five thousand, nine hundred eighty-nine".