641764182 has 8 divisors (see below), whose sum is σ = 1283528376. Its totient is φ = 213921392.

The previous prime is 641764157. The next prime is 641764183. The reversal of 641764182 is 281467146.

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

641764182 is an admirable number.

It is a super-2 number, since 2×641764182² = 823722530596258248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 641764182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641764183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53480343 + ... + 53480354.

It is an arithmetic number, because the mean of its divisors is an integer number (160441047).

Almost surely, 2^641764182 is an apocalyptic number.

641764182 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

641764182 is a wasteful number, since it uses less digits than its factorization.

641764182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106960702.

The product of its digits is 64512, while the sum is 39.

The square root of 641764182 is about 25333.0649941929. The cubic root of 641764182 is about 862.5649859877.

The spelling of 641764182 in words is "six hundred forty-one million, seven hundred sixty-four thousand, one hundred eighty-two".