1125879489 has 12 divisors (see below), whose sum is σ = 1858594816. Its totient is φ = 643359672.

The previous prime is 1125879373. The next prime is 1125879541. The reversal of 1125879489 is 9849785211.

It is a happy number.

1125879489 is a `hidden beast` number, since 1 + 12 + 587 + 9 + 48 + 9 = 666.

It is not a de Polignac number, because 1125879489 - 2⁷ = 1125879361 is a prime.

It is a super-2 number, since 2×1125879489² = 2535209247501802242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125875489) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8935489 + ... + 8935614.

Almost surely, 2^1125879489 is an apocalyptic number.

It is an amenable number.

1125879489 is a deficient number, since it is larger than the sum of its proper divisors (732715327).

1125879489 is a wasteful number, since it uses less digits than its factorization.

1125879489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17871116 (or 17871113 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 54.

The square root of 1125879489 is about 33554.1277490564. The cubic root of 1125879489 is about 1040.3128647591.

The spelling of 1125879489 in words is "one billion, one hundred twenty-five million, eight hundred seventy-nine thousand, four hundred eighty-nine".