641925193 has 16 divisors (see below), whose sum is σ = 824414976. Its totient is φ = 485812800.

The previous prime is 641925169. The next prime is 641925197. The reversal of 641925193 is 391529146.

It is a cyclic number.

It is not a de Polignac number, because 641925193 - 2²⁹ = 105054281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (641925197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151258 + ... + 155443.

It is an arithmetic number, because the mean of its divisors is an integer number (51525936).

Almost surely, 2^641925193 is an apocalyptic number.

It is an amenable number.

641925193 is a deficient number, since it is larger than the sum of its proper divisors (182489783).

641925193 is a wasteful number, since it uses less digits than its factorization.

641925193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306744.

The product of its digits is 58320, while the sum is 40.

The square root of 641925193 is about 25336.2426772400. The cubic root of 641925193 is about 862.6371157210.

The spelling of 641925193 in words is "six hundred forty-one million, nine hundred twenty-five thousand, one hundred ninety-three".