1164345620 has 24 divisors (see below), whose sum is σ = 2478623784. Its totient is φ = 459357696.

The previous prime is 1164345619. The next prime is 1164345659. The reversal of 1164345620 is 265434611.

It can be written as a sum of positive squares in 4 ways, for example, as 128278276 + 1036067344 = 11326^2 + 32188^2 .

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 in 7 ways as a sum of consecutive naturals, for example, 397289 + ... + 400208.

It is an arithmetic number, because the mean of its divisors is an integer number (103275991).

Almost surely, 2^1164345620 is an apocalyptic number.

1164345620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1164345620 is an abundant number, since it is smaller than the sum of its proper divisors (1314278164).

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

1164345620 is a wasteful number, since it uses less digits than its factorization.

1164345620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797579 (or 797577 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 1164345620 is about 34122.5089933317. The cubic root of 1164345620 is about 1052.0280139716.

The spelling of 1164345620 in words is "one billion, one hundred sixty-four million, three hundred forty-five thousand, six hundred twenty".