641141172 has 36 divisors (see below), whose sum is σ = 1852186336. Its totient is φ = 183183120.

The previous prime is 641141119. The next prime is 641141177. The reversal of 641141172 is 271141146.

641141172 is a `hidden beast` number, since 641 + 1 + 4 + 1 + 17 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×641141172² = 822124004867067168, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641141177) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1271854 + ... + 1272357.

Almost surely, 2^641141172 is an apocalyptic number.

It is an amenable number.

641141172 is an abundant number, since it is smaller than the sum of its proper divisors (1211045164).

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

641141172 is a wasteful number, since it uses less digits than its factorization.

641141172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2544228 (or 2544223 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 641141172 is about 25320.7656282349. The cubic root of 641141172 is about 862.2857761600.

The spelling of 641141172 in words is "six hundred forty-one million, one hundred forty-one thousand, one hundred seventy-two".