1129689136 has 10 divisors (see below), whose sum is σ = 2188772732. Its totient is φ = 564844560.

The previous prime is 1129689101. The next prime is 1129689139. The reversal of 1129689136 is 6319869211.

It is not an unprimeable number, because it can be changed into a prime (1129689139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35302770 + ... + 35302801.

Almost surely, 2^1129689136 is an apocalyptic number.

1129689136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1129689136 is a deficient number, since it is larger than the sum of its proper divisors (1059083596).

1129689136 is an equidigital number, since it uses as much as digits as its factorization.

1129689136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70605579 (or 70605573 counting only the distinct ones).

The product of its digits is 139968, while the sum is 46.

The square root of 1129689136 is about 33610.8484867609. The cubic root of 1129689136 is about 1041.4849153133.

The spelling of 1129689136 in words is "one billion, one hundred twenty-nine million, six hundred eighty-nine thousand, one hundred thirty-six".