641943492 has 24 divisors (see below), whose sum is σ = 1509305952. Its totient is φ = 212347200.

The previous prime is 641943479. The next prime is 641943499. The reversal of 641943492 is 294349146.

It is not an unprimeable number, because it can be changed into a prime (641943499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202609 + ... + 205752.

It is an arithmetic number, because the mean of its divisors is an integer number (62887748).

Almost surely, 2^641943492 is an apocalyptic number.

It is an amenable number.

641943492 is an abundant number, since it is smaller than the sum of its proper divisors (867362460).

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

641943492 is a wasteful number, since it uses less digits than its factorization.

641943492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408499 (or 408497 counting only the distinct ones).

The product of its digits is 186624, while the sum is 42.

The square root of 641943492 is about 25336.6037976679. The cubic root of 641943492 is about 862.6453125466.

The spelling of 641943492 in words is "six hundred forty-one million, nine hundred forty-three thousand, four hundred ninety-two".