1164821109 has 16 divisors (see below), whose sum is σ = 1609344000. Its totient is φ = 748880496.

The previous prime is 1164821057. The next prime is 1164821117. The reversal of 1164821109 is 9011284611.

It is not a de Polignac number, because 1164821109 - 2¹² = 1164817013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1164821109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1164821509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46959 + ... + 67340.

It is an arithmetic number, because the mean of its divisors is an integer number (100584000).

Almost surely, 2^1164821109 is an apocalyptic number.

It is an amenable number.

1164821109 is a deficient number, since it is larger than the sum of its proper divisors (444522891).

1164821109 is a wasteful number, since it uses less digits than its factorization.

1164821109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114424.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 1164821109 is about 34129.4756625413. The cubic root of 1164821109 is about 1052.1712016018.

The spelling of 1164821109 in words is "one billion, one hundred sixty-four million, eight hundred twenty-one thousand, one hundred nine".