641144019 has 16 divisors (see below), whose sum is σ = 878613120. Its totient is φ = 415621440.

The previous prime is 641144011. The next prime is 641144027. The reversal of 641144019 is 910441146.

641144019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (641144011) and next prime (641144027).

It is not a de Polignac number, because 641144019 - 2³ = 641144011 is a prime.

It is a super-2 number, since 2×641144019² = 822131306198944722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641144011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29272 + ... + 46250.

It is an arithmetic number, because the mean of its divisors is an integer number (54913320).

Almost surely, 2^641144019 is an apocalyptic number.

641144019 is a deficient number, since it is larger than the sum of its proper divisors (237469101).

641144019 is a wasteful number, since it uses less digits than its factorization.

641144019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17330.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 641144019 is about 25320.8218468517. The cubic root of 641144019 is about 862.2870524905.

The spelling of 641144019 in words is "six hundred forty-one million, one hundred forty-four thousand, nineteen".