1158964643 has 8 divisors (see below), whose sum is σ = 1162550400. Its totient is φ = 1155385728.

The previous prime is 1158964619. The next prime is 1158964669. The reversal of 1158964643 is 3464698511.

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

It is a cyclic number.

It is not a de Polignac number, because 1158964643 - 2¹⁸ = 1158702499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1158964693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 657998 + ... + 659756.

It is an arithmetic number, because the mean of its divisors is an integer number (145318800).

Almost surely, 2^1158964643 is an apocalyptic number.

1158964643 is a deficient number, since it is larger than the sum of its proper divisors (3585757).

1158964643 is a wasteful number, since it uses less digits than its factorization.

1158964643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3421.

The product of its digits is 622080, while the sum is 47.

The square root of 1158964643 is about 34043.5697746285. The cubic root of 1158964643 is about 1050.4048757587.

The spelling of 1158964643 in words is "one billion, one hundred fifty-eight million, nine hundred sixty-four thousand, six hundred forty-three".