641822130 has 160 divisors (see below), whose sum is σ = 1841647104. Its totient is φ = 160009344.

The previous prime is 641822101. The next prime is 641822143. The reversal of 641822130 is 31228146.

641822130 is a `hidden beast` number, since 641 + 8 + 2 + 2 + 13 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 641822094 and 641822103.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 875244 + ... + 875976.

Almost surely, 2^641822130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641822130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (920823552).

641822130 is an abundant number, since it is smaller than the sum of its proper divisors (1199824974).

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

641822130 is a wasteful number, since it uses less digits than its factorization.

641822130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822 (or 813 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 641822130 is about 25334.2086910170. The cubic root of 641822130 is about 862.5909469314.

The spelling of 641822130 in words is "six hundred forty-one million, eight hundred twenty-two thousand, one hundred thirty".