1164205011 has 4 divisors (see below), whose sum is σ = 1552273352. Its totient is φ = 776136672.

The previous prime is 1164205001. The next prime is 1164205013. The reversal of 1164205011 is 1105024611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1105024611 = 3 ⋅368341537.

It is not a de Polignac number, because 1164205011 - 2⁷ = 1164204883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1164205013) 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, 194034166 + ... + 194034171.

It is an arithmetic number, because the mean of its divisors is an integer number (388068338).

Almost surely, 2^1164205011 is an apocalyptic number.

1164205011 is a deficient number, since it is larger than the sum of its proper divisors (388068341).

1164205011 is an equidigital number, since it uses as much as digits as its factorization.

1164205011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388068340.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 1164205011 is about 34120.4485755976. The cubic root of 1164205011 is about 1051.9856638425.

Adding to 1164205011 its reverse (1105024611), we get a palindrome (2269229622).

The spelling of 1164205011 in words is "one billion, one hundred sixty-four million, two hundred five thousand, eleven".