1164638 has 4 divisors (see below), whose sum is σ = 1746960. Its totient is φ = 582318.

The previous prime is 1164629. The next prime is 1164641. The reversal of 1164638 is 8364611.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1164638.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 291158 + ... + 291161.

It is an arithmetic number, because the mean of its divisors is an integer number (436740).

2^1164638 is an apocalyptic number.

1164638 is a deficient number, since it is larger than the sum of its proper divisors (582322).

1164638 is an equidigital number, since it uses as much as digits as its factorization.

1164638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582321.

The product of its digits is 3456, while the sum is 29.

The square root of 1164638 is about 1079.1839509555. The cubic root of 1164638 is about 105.2116065206.

The spelling of 1164638 in words is "one million, one hundred sixty-four thousand, six hundred thirty-eight".