1125831688 has 8 divisors (see below), whose sum is σ = 2110934430. Its totient is φ = 562915840.

The previous prime is 1125831673. The next prime is 1125831691. The reversal of 1125831688 is 8861385211.

It can be written as a sum of positive squares in only one way, i.e., 1016461924 + 109369764 = 31882^2 + 10458^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70364473 + ... + 70364488.

Almost surely, 2^1125831688 is an apocalyptic number.

It is an amenable number.

1125831688 is a deficient number, since it is larger than the sum of its proper divisors (985102742).

1125831688 is a wasteful number, since it uses less digits than its factorization.

1125831688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140728967 (or 140728963 counting only the distinct ones).

The product of its digits is 92160, while the sum is 43.

The square root of 1125831688 is about 33553.4154446310. The cubic root of 1125831688 is about 1040.2981418396.

The spelling of 1125831688 in words is "one billion, one hundred twenty-five million, eight hundred thirty-one thousand, six hundred eighty-eight".