1641444827 has 8 divisors (see below), whose sum is σ = 1884912960. Its totient is φ = 1413684360.

The previous prime is 1641444817. The next prime is 1641444839. The reversal of 1641444827 is 7284441461.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-1641444827 is a prime.

It is a super-2 number, since 2×1641444827² = 5388682240170119858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1641444817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3926693 + ... + 3927110.

It is an arithmetic number, because the mean of its divisors is an integer number (235614120).

Almost surely, 2^1641444827 is an apocalyptic number.

1641444827 is a deficient number, since it is larger than the sum of its proper divisors (243468133).

1641444827 is a wasteful number, since it uses less digits than its factorization.

1641444827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7853833.

The product of its digits is 172032, while the sum is 41.

The square root of 1641444827 is about 40514.7482652922. The cubic root of 1641444827 is about 1179.6199166079.

The spelling of 1641444827 in words is "one billion, six hundred forty-one million, four hundred forty-four thousand, eight hundred twenty-seven".