1641103650 has 72 divisors (see below), whose sum is σ = 4414900464. Its totient is φ = 437052000.

The previous prime is 1641103621. The next prime is 1641103669. The reversal of 1641103650 is 563011461.

1641103650 is a `hidden beast` number, since 1 + 6 + 4 + 1 + 1 + 0 + 3 + 650 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 424225 + ... + 428075.

It is an arithmetic number, because the mean of its divisors is an integer number (61318062).

Almost surely, 2^1641103650 is an apocalyptic number.

1641103650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1641103650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2207450232).

1641103650 is an abundant number, since it is smaller than the sum of its proper divisors (2773796814).

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

1641103650 is a wasteful number, since it uses less digits than its factorization.

1641103650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4816 (or 4808 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1641103650 is about 40510.5375180335. The cubic root of 1641103650 is about 1179.5381822998.

The spelling of 1641103650 in words is "one billion, six hundred forty-one million, one hundred three thousand, six hundred fifty".