1641043842 has 16 divisors (see below), whose sum is σ = 3293939712. Its totient is φ = 545039280.

The previous prime is 1641043841. The next prime is 1641043871. The reversal of 1641043842 is 2483401461.

It is a super-2 number, since 2×1641043842² = 5386049782732241928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1641043841) 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, 492034 + ... + 495357.

It is an arithmetic number, because the mean of its divisors is an integer number (205871232).

Almost surely, 2^1641043842 is an apocalyptic number.

1641043842 is an abundant number, since it is smaller than the sum of its proper divisors (1652895870).

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

1641043842 is a wasteful number, since it uses less digits than its factorization.

1641043842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987673.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 1641043842 is about 40509.7993330009. The cubic root of 1641043842 is about 1179.5238531873.

The spelling of 1641043842 in words is "one billion, six hundred forty-one million, forty-three thousand, eight hundred forty-two".