1125031866 has 24 divisors (see below), whose sum is σ = 2617421760. Its totient is φ = 321437592.

The previous prime is 1125031861. The next prime is 1125031871. The reversal of 1125031866 is 6681305211.

It is an interprime number because it is at equal distance from previous prime (1125031861) and next prime (1125031871).

It is not an unprimeable number, because it can be changed into a prime (1125031861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1913026 + ... + 1913613.

It is an arithmetic number, because the mean of its divisors is an integer number (109059240).

Almost surely, 2^1125031866 is an apocalyptic number.

1125031866 is an abundant number, since it is smaller than the sum of its proper divisors (1492389894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1125031866 is a wasteful number, since it uses less digits than its factorization.

1125031866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3826658 (or 3826651 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 1125031866 is about 33541.4946894142. The cubic root of 1125031866 is about 1040.0517312778.

The spelling of 1125031866 in words is "one billion, one hundred twenty-five million, thirty-one thousand, eight hundred sixty-six".