1136040643 has 4 divisors (see below), whose sum is σ = 1136419960. Its totient is φ = 1135661328.

The previous prime is 1136040629. The next prime is 1136040649. The reversal of 1136040643 is 3460406311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1136040643 - 2⁵ = 1136040611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1136040649) 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, 185130 + ... + 191167.

It is an arithmetic number, because the mean of its divisors is an integer number (284104990).

Almost surely, 2^1136040643 is an apocalyptic number.

1136040643 is a deficient number, since it is larger than the sum of its proper divisors (379317).

1136040643 is an equidigital number, since it uses as much as digits as its factorization.

1136040643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379316.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 1136040643 is about 33705.2020168994. The cubic root of 1136040643 is about 1043.4331326946.

Adding to 1136040643 its reverse (3460406311), we get a palindrome (4596446954).

It can be divided in two parts, 11360 and 40643, that added together give a triangular number (52003 = T₃₂₂).

The spelling of 1136040643 in words is "one billion, one hundred thirty-six million, forty thousand, six hundred forty-three".