641163793 has 8 divisors (see below), whose sum is σ = 662213376. Its totient is φ = 620137200.

The previous prime is 641163791. The next prime is 641163799. The reversal of 641163793 is 397361146.

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

It is a cyclic number.

It is not a de Polignac number, because 641163793 - 2¹ = 641163791 is a prime.

It is a super-2 number, since 2×641163793² = 822182018908293698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641163791) 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, 64923 + ... + 74143.

It is an arithmetic number, because the mean of its divisors is an integer number (82776672).

Almost surely, 2^641163793 is an apocalyptic number.

It is an amenable number.

641163793 is a deficient number, since it is larger than the sum of its proper divisors (21049583).

641163793 is a wasteful number, since it uses less digits than its factorization.

641163793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11495.

The product of its digits is 81648, while the sum is 40.

The square root of 641163793 is about 25321.2123129995. The cubic root of 641163793 is about 862.2959172116.

The spelling of 641163793 in words is "six hundred forty-one million, one hundred sixty-three thousand, seven hundred ninety-three".