1005264641 has 4 divisors (see below), whose sum is σ = 1015628292. Its totient is φ = 994900992.

The previous prime is 1005264629. The next prime is 1005264643. The reversal of 1005264641 is 1464625001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 395174641 + 610090000 = 19879^2 + 24700^2 .

It is a cyclic number.

It is not a de Polignac number, because 1005264641 - 2⁶ = 1005264577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1005264643) 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 3 ways as a sum of consecutive naturals, for example, 5181680 + ... + 5181873.

It is an arithmetic number, because the mean of its divisors is an integer number (253907073).

Almost surely, 2^1005264641 is an apocalyptic number.

It is an amenable number.

1005264641 is a deficient number, since it is larger than the sum of its proper divisors (10363651).

1005264641 is an equidigital number, since it uses as much as digits as its factorization.

1005264641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10363650.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1005264641 is about 31705.9086133799. The cubic root of 1005264641 is about 1001.7518097041.

Adding to 1005264641 its reverse (1464625001), we get a palindrome (2469889642).

The spelling of 1005264641 in words is "one billion, five million, two hundred sixty-four thousand, six hundred forty-one".