1641490800 has 120 divisors (see below), whose sum is σ = 5293649280. Its totient is φ = 434784000.

The previous prime is 1641490793. The next prime is 1641490853. The reversal of 1641490800 is 80941461.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176671 + ... + 185729.

It is an arithmetic number, because the mean of its divisors is an integer number (44113744).

Almost surely, 2^1641490800 is an apocalyptic number.

1641490800 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 1641490800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2646824640).

1641490800 is an abundant number, since it is smaller than the sum of its proper divisors (3652158480).

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

1641490800 is a wasteful number, since it uses less digits than its factorization.

1641490800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9231 (or 9220 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 1641490800 is about 40515.3156226136. The cubic root of 1641490800 is about 1179.6309292961.

The spelling of 1641490800 in words is "one billion, six hundred forty-one million, four hundred ninety thousand, eight hundred".