641892319 has 8 divisors (see below), whose sum is σ = 648875232. Its totient is φ = 634932480.

The previous prime is 641892313. The next prime is 641892323. The reversal of 641892319 is 913298146.

It is a happy number.

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 641892319 - 2⁵ = 641892287 is a prime.

It is a super-2 number, since 2×641892319² = 824051498382395522, 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 (641892313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53422 + ... + 64324.

It is an arithmetic number, because the mean of its divisors is an integer number (81109404).

Almost surely, 2^641892319 is an apocalyptic number.

641892319 is a deficient number, since it is larger than the sum of its proper divisors (6982913).

641892319 is a wasteful number, since it uses less digits than its factorization.

641892319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11537.

The product of its digits is 93312, while the sum is 43.

The square root of 641892319 is about 25335.5939144911. The cubic root of 641892319 is about 862.6223898013.

The spelling of 641892319 in words is "six hundred forty-one million, eight hundred ninety-two thousand, three hundred nineteen".