641538295 has 8 divisors (see below), whose sum is σ = 777041424. Its totient is φ = 508433664.

The previous prime is 641538283. The next prime is 641538323. The reversal of 641538295 is 592835146.

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 641538295 - 2⁵ = 641538263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 599034 + ... + 600103.

It is an arithmetic number, because the mean of its divisors is an integer number (97130178).

Almost surely, 2^641538295 is an apocalyptic number.

641538295 is a deficient number, since it is larger than the sum of its proper divisors (135503129).

641538295 is a wasteful number, since it uses less digits than its factorization.

641538295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199249.

The product of its digits is 259200, while the sum is 43.

The square root of 641538295 is about 25328.6062585370. The cubic root of 641538295 is about 862.4637727555.

The spelling of 641538295 in words is "six hundred forty-one million, five hundred thirty-eight thousand, two hundred ninety-five".