1164435220 has 48 divisors (see below), whose sum is σ = 2665192320. Its totient is φ = 424757376.

The previous prime is 1164435211. The next prime is 1164435229. The reversal of 1164435220 is 225344611.

It is an interprime number because it is at equal distance from previous prime (1164435211) and next prime (1164435229).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1164435229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5400 + ... + 48559.

It is an arithmetic number, because the mean of its divisors is an integer number (55524840).

Almost surely, 2^1164435220 is an apocalyptic number.

1164435220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1164435220 is an abundant number, since it is smaller than the sum of its proper divisors (1500757100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1164435220 is a wasteful number, since it uses less digits than its factorization.

1164435220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54064 (or 54062 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1164435220 is about 34123.8218844255. The cubic root of 1164435220 is about 1052.0549988836.

Adding to 1164435220 its reverse (225344611), we get a palindrome (1389779831).

It can be divided in two parts, 11644 and 35220, that added together give a palindrome (46864).

The spelling of 1164435220 in words is "one billion, one hundred sixty-four million, four hundred thirty-five thousand, two hundred twenty".