1129697769 has 8 divisors (see below), whose sum is σ = 1506566592. Its totient is φ = 752980400.

The previous prime is 1129697747. The next prime is 1129697783. The reversal of 1129697769 is 9677969211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1129697769 is a prime.

It is a super-2 number, since 2×1129697769² = 2552434098567154722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1129697729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19134 + ... + 51239.

It is an arithmetic number, because the mean of its divisors is an integer number (188320824).

Almost surely, 2^1129697769 is an apocalyptic number.

It is an amenable number.

1129697769 is a deficient number, since it is larger than the sum of its proper divisors (376868823).

1129697769 is an equidigital number, since it uses as much as digits as its factorization.

1129697769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75727.

The product of its digits is 2571912, while the sum is 57.

The square root of 1129697769 is about 33610.9769123124. The cubic root of 1129697769 is about 1041.4875682898.

The spelling of 1129697769 in words is "one billion, one hundred twenty-nine million, six hundred ninety-seven thousand, seven hundred sixty-nine".