1125198028 has 24 divisors (see below), whose sum is σ = 2084377680. Its totient is φ = 530564160.

The previous prime is 1125198017. The next prime is 1125198037. The reversal of 1125198028 is 8208915211.

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 in 7 ways as a sum of consecutive naturals, for example, 107803 + ... + 117778.

It is an arithmetic number, because the mean of its divisors is an integer number (86849070).

Almost surely, 2^1125198028 is an apocalyptic number.

It is an amenable number.

1125198028 is a deficient number, since it is larger than the sum of its proper divisors (959179652).

1125198028 is a wasteful number, since it uses less digits than its factorization.

1125198028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225657 (or 225655 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 37.

The square root of 1125198028 is about 33543.9715597304. The cubic root of 1125198028 is about 1040.1029323663.

The spelling of 1125198028 in words is "one billion, one hundred twenty-five million, one hundred ninety-eight thousand, twenty-eight".