641983132 has 24 divisors (see below), whose sum is σ = 1284685920. Its totient is φ = 274981440.

The previous prime is 641983129. The next prime is 641983157. The reversal of 641983132 is 231389146.

It is a junction number, because it is equal to n+sod(n) for n = 641983091 and 641983100.

It is a congruent number.

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, 54594 + ... + 65302.

It is an arithmetic number, because the mean of its divisors is an integer number (53528580).

Almost surely, 2^641983132 is an apocalyptic number.

It is an amenable number.

641983132 is an abundant number, since it is smaller than the sum of its proper divisors (642702788).

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

641983132 is a wasteful number, since it uses less digits than its factorization.

641983132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12861 (or 12859 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 641983132 is about 25337.3860530245. The cubic root of 641983132 is about 862.6630682924.

The spelling of 641983132 in words is "six hundred forty-one million, nine hundred eighty-three thousand, one hundred thirty-two".