641930802 has 16 divisors (see below), whose sum is σ = 1286033760. Its totient is φ = 213614912.

The previous prime is 641930777. The next prime is 641930833. The reversal of 641930802 is 208039146.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86652 + ... + 93767.

It is an arithmetic number, because the mean of its divisors is an integer number (80377110).

Almost surely, 2^641930802 is an apocalyptic number.

641930802 is an abundant number, since it is smaller than the sum of its proper divisors (644102958).

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

641930802 is a wasteful number, since it uses less digits than its factorization.

641930802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181017.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 641930802 is about 25336.3533682336. The cubic root of 641930802 is about 862.6396282243.

Adding to 641930802 its reverse (208039146), we get a palindrome (849969948).

The spelling of 641930802 in words is "six hundred forty-one million, nine hundred thirty thousand, eight hundred two".