1641422800 has 60 divisors (see below), whose sum is σ = 3980477376. Its totient is φ = 650416000.

The previous prime is 1641422791. The next prime is 1641422851. The reversal of 1641422800 is 82241461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23625 + ... + 61975.

Almost surely, 2^1641422800 is an apocalyptic number.

1641422800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1641422800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1990238688).

1641422800 is an abundant number, since it is smaller than the sum of its proper divisors (2339054576).

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

1641422800 is a wasteful number, since it uses less digits than its factorization.

1641422800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38476 (or 38465 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 1641422800 is about 40514.4764251002. The cubic root of 1641422800 is about 1179.6146400362.

The spelling of 1641422800 in words is "one billion, six hundred forty-one million, four hundred twenty-two thousand, eight hundred".