1135678469 has 4 divisors (see below), whose sum is σ = 1195451040. Its totient is φ = 1075905900.

The previous prime is 1135678451. The next prime is 1135678471. The reversal of 1135678469 is 9648765311.

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 an emirpimes, since its reverse is a distinct semiprime: 9648765311 = 74101 ⋅130211.

It is a cyclic number.

It is not a de Polignac number, because 1135678469 - 2²⁰ = 1134629893 is a prime.

It is a super-2 number, since 2×1135678469² = 2579531169900367922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135678409) 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 3 ways as a sum of consecutive naturals, for example, 29886257 + ... + 29886294.

It is an arithmetic number, because the mean of its divisors is an integer number (298862760).

Almost surely, 2^1135678469 is an apocalyptic number.

1135678469 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1135678469 is a deficient number, since it is larger than the sum of its proper divisors (59772571).

1135678469 is an equidigital number, since it uses as much as digits as its factorization.

1135678469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59772570.

The product of its digits is 1088640, while the sum is 50.

The square root of 1135678469 is about 33699.8289164797. The cubic root of 1135678469 is about 1043.3222374492.

The spelling of 1135678469 in words is "one billion, one hundred thirty-five million, six hundred seventy-eight thousand, four hundred sixty-nine".