1069742689 has 4 divisors (see below), whose sum is σ = 1069815040. Its totient is φ = 1069670340.

The previous prime is 1069742671. The next prime is 1069742743. The reversal of 1069742689 is 9862479601.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1069742689 - 2¹⁷ = 1069611617 is a prime.

It is a super-2 number, since 2×1069742689² = 2288698841337901442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1069742789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5097 + ... + 46534.

It is an arithmetic number, because the mean of its divisors is an integer number (267453760).

Almost surely, 2^1069742689 is an apocalyptic number.

It is an amenable number.

1069742689 is a deficient number, since it is larger than the sum of its proper divisors (72351).

1069742689 is an equidigital number, since it uses as much as digits as its factorization.

1069742689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72350.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The square root of 1069742689 is about 32706.9211177084. The cubic root of 1069742689 is about 1022.7271276460.

The spelling of 1069742689 in words is "one billion, sixty-nine million, seven hundred forty-two thousand, six hundred eighty-nine".