641375389 has 8 divisors (see below), whose sum is σ = 651819168. Its totient is φ = 630957360.

The previous prime is 641375347. The next prime is 641375393. The reversal of 641375389 is 983573146.

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 641375389 - 2⁷ = 641375261 is a prime.

It is a super-2 number, since 2×641375389² = 822724779229802642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641375689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47394 + ... + 59404.

It is an arithmetic number, because the mean of its divisors is an integer number (81477396).

Almost surely, 2^641375389 is an apocalyptic number.

It is an amenable number.

641375389 is a deficient number, since it is larger than the sum of its proper divisors (10443779).

641375389 is a wasteful number, since it uses less digits than its factorization.

641375389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12875.

The product of its digits is 544320, while the sum is 46.

The square root of 641375389 is about 25325.3902042989. The cubic root of 641375389 is about 862.3907646859.

The spelling of 641375389 in words is "six hundred forty-one million, three hundred seventy-five thousand, three hundred eighty-nine".