1172869126 has 48 divisors (see below), whose sum is σ = 2187743040. Its totient is φ = 466184160.

The previous prime is 1172869121. The next prime is 1172869129. The reversal of 1172869126 is 6219682711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172869121) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 62341 + ... + 78943.

It is an arithmetic number, because the mean of its divisors is an integer number (45577980).

Almost surely, 2^1172869126 is an apocalyptic number.

1172869126 is a deficient number, since it is larger than the sum of its proper divisors (1014873914).

1172869126 is a wasteful number, since it uses less digits than its factorization.

1172869126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16661 (or 16648 counting only the distinct ones).

The product of its digits is 72576, while the sum is 43.

The square root of 1172869126 is about 34247.1769055495. The cubic root of 1172869126 is about 1054.5888729975.

The spelling of 1172869126 in words is "one billion, one hundred seventy-two million, eight hundred sixty-nine thousand, one hundred twenty-six".