1164891 has 32 divisors (see below), whose sum is σ = 2032128. Its totient is φ = 576000.

The previous prime is 1164869. The next prime is 1164899. The reversal of 1164891 is 1984611.

It is not a de Polignac number, because 1164891 - 2⁵ = 1164859 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1164899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4516 + ... + 4766.

It is an arithmetic number, because the mean of its divisors is an integer number (63504).

2^1164891 is an apocalyptic number.

1164891 is a deficient number, since it is larger than the sum of its proper divisors (867237).

1164891 is a wasteful number, since it uses less digits than its factorization.

1164891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291.

The product of its digits is 1728, while the sum is 30.

The square root of 1164891 is about 1079.3011627901. The cubic root of 1164891 is about 105.2192245127.

The spelling of 1164891 in words is "one million, one hundred sixty-four thousand, eight hundred ninety-one".