641937450 has 96 divisors (see below), whose sum is σ = 1984872960. Its totient is φ = 133387200.

The previous prime is 641937419. The next prime is 641937463. The reversal of 641937450 is 54739146.

It is a junction number, because it is equal to n+sod(n) for n = 641937399 and 641937408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16240 + ... + 39339.

It is an arithmetic number, because the mean of its divisors is an integer number (20675760).

Almost surely, 2^641937450 is an apocalyptic number.

641937450 is an abundant number, since it is smaller than the sum of its proper divisors (1342935510).

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

641937450 is a wasteful number, since it uses less digits than its factorization.

641937450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55612 (or 55607 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 641937450 is about 25336.4845627802. The cubic root of 641937450 is about 862.6426061198.

The spelling of 641937450 in words is "six hundred forty-one million, nine hundred thirty-seven thousand, four hundred fifty".