2019805632 has 560 divisors, whose sum is σ = 7156350432. Its totient is φ = 557383680.

The previous prime is 2019805631. The next prime is 2019805663. The reversal of 2019805632 is 2365089102.

2019805632 is a `hidden beast` number, since 2 + 0 + 1 + 98 + 0 + 563 + 2 = 666.

It is a super-2 number, since 2×2019805632² = 8159229582117838848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2019805631) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 46972203 + ... + 46972245.

Almost surely, 2^2019805632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2019805632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3578175216).

2019805632 is an abundant number, since it is smaller than the sum of its proper divisors (5136544800).

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

2019805632 is a wasteful number, since it uses less digits than its factorization.

2019805632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 2019805632 is about 44942.2477408507. The cubic root of 2019805632 is about 1264.0663186910.

The spelling of 2019805632 in words is "two billion, nineteen million, eight hundred five thousand, six hundred thirty-two".