1164120621 has 8 divisors (see below), whose sum is σ = 1552449600. Its totient is φ = 775936032.

The previous prime is 1164120619. The next prime is 1164120637. The reversal of 1164120621 is 1260214611.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1164120621 - 2¹ = 1164120619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1164120591 and 1164120600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1164120121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15625 + ... + 50718.

It is an arithmetic number, because the mean of its divisors is an integer number (194056200).

Almost surely, 2^1164120621 is an apocalyptic number.

It is an amenable number.

1164120621 is a deficient number, since it is larger than the sum of its proper divisors (388328979).

1164120621 is an equidigital number, since it uses as much as digits as its factorization.

1164120621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72195.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1164120621 is about 34119.2119047319. The cubic root of 1164120621 is about 1051.9602447183.

The spelling of 1164120621 in words is "one billion, one hundred sixty-four million, one hundred twenty thousand, six hundred twenty-one".