1164206243 has 4 divisors (see below), whose sum is σ = 1164655080. Its totient is φ = 1163757408.

The previous prime is 1164206233. The next prime is 1164206273. The reversal of 1164206243 is 3426024611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3426024611 = 2999 ⋅1142389.

It is a cyclic number.

It is not a de Polignac number, because 1164206243 - 2⁴ = 1164206227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1164206213) 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, 220505 + ... + 225722.

It is an arithmetic number, because the mean of its divisors is an integer number (291163770).

Almost surely, 2^1164206243 is an apocalyptic number.

1164206243 is a deficient number, since it is larger than the sum of its proper divisors (448837).

1164206243 is an equidigital number, since it uses as much as digits as its factorization.

1164206243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448836.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 1164206243 is about 34120.4666292828. The cubic root of 1164206243 is about 1051.9860349243.

The spelling of 1164206243 in words is "one billion, one hundred sixty-four million, two hundred six thousand, two hundred forty-three".