1630199844 has 120 divisors (see below), whose sum is σ = 5245220288. Its totient is φ = 429935040.

The previous prime is 1630199833. The next prime is 1630199873. The reversal of 1630199844 is 4489910361.

1630199844 is a `hidden beast` number, since 1 + 630 + 1 + 9 + 9 + 8 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1630199844.

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 39 ways as a sum of consecutive naturals, for example, 1839 + ... + 57129.

Almost surely, 2^1630199844 is an apocalyptic number.

1630199844 is a gapful number since it is divisible by the number (14) 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 1630199844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2622610144).

1630199844 is an abundant number, since it is smaller than the sum of its proper divisors (3615020444).

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

1630199844 is a wasteful number, since it uses less digits than its factorization.

1630199844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55327 (or 55316 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 1630199844 is about 40375.7333555689. The cubic root of 1630199844 is about 1176.9200162107.

The spelling of 1630199844 in words is "one billion, six hundred thirty million, one hundred ninety-nine thousand, eight hundred forty-four".