1164215643 has 12 divisors (see below), whose sum is σ = 1607663928. Its totient is φ = 749378560.

The previous prime is 1164215639. The next prime is 1164215713. The reversal of 1164215643 is 3465124611.

It is not a de Polignac number, because 1164215643 - 2² = 1164215639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1164213643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 228198 + ... + 233243.

It is an arithmetic number, because the mean of its divisors is an integer number (133971994).

Almost surely, 2^1164215643 is an apocalyptic number.

1164215643 is a deficient number, since it is larger than the sum of its proper divisors (443448285).

1164215643 is an equidigital number, since it uses as much as digits as its factorization.

1164215643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461502 (or 461473 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 1164215643 is about 34120.6043762416. The cubic root of 1164215643 is about 1051.9888662216.

The spelling of 1164215643 in words is "one billion, one hundred sixty-four million, two hundred fifteen thousand, six hundred forty-three".