1129507686 has 16 divisors (see below), whose sum is σ = 2510017200. Its totient is φ = 376502544.

The previous prime is 1129507669. The next prime is 1129507739. The reversal of 1129507686 is 6867059211.

It is a super-2 number, since 2×1129507686² = 2551575225466149192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10458351 + ... + 10458458.

It is an arithmetic number, because the mean of its divisors is an integer number (156876075).

Almost surely, 2^1129507686 is an apocalyptic number.

1129507686 is an abundant number, since it is smaller than the sum of its proper divisors (1380509514).

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

1129507686 is a wasteful number, since it uses less digits than its factorization.

1129507686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20916820 (or 20916814 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 1129507686 is about 33608.1491010737. The cubic root of 1129507686 is about 1041.4291514308.

The spelling of 1129507686 in words is "one billion, one hundred twenty-nine million, five hundred seven thousand, six hundred eighty-six".