1164169491 has 4 divisors (see below), whose sum is σ = 1552225992. Its totient is φ = 776112992.

The previous prime is 1164169477. The next prime is 1164169499. The reversal of 1164169491 is 1949614611.

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 1164169491 - 2⁹ = 1164168979 is a prime.

It is a super-3 number, since 3×1164169491³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1164169499) 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, 194028246 + ... + 194028251.

It is an arithmetic number, because the mean of its divisors is an integer number (388056498).

Almost surely, 2^1164169491 is an apocalyptic number.

1164169491 is a deficient number, since it is larger than the sum of its proper divisors (388056501).

1164169491 is an equidigital number, since it uses as much as digits as its factorization.

1164169491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388056500.

The product of its digits is 46656, while the sum is 42.

The square root of 1164169491 is about 34119.9280626440. The cubic root of 1164169491 is about 1051.9749650078.

The spelling of 1164169491 in words is "one billion, one hundred sixty-four million, one hundred sixty-nine thousand, four hundred ninety-one".