1081995200 has 168 divisors, whose sum is σ = 3128497680. Its totient is φ = 363110400.

The previous prime is 1081995193. The next prime is 1081995217. The reversal of 1081995200 is 25991801.

It is a super-2 number, since 2×1081995200² = 2341427225646080000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

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, 226436 + ... + 231164.

It is an arithmetic number, because the mean of its divisors is an integer number (18622010).

Almost surely, 2^1081995200 is an apocalyptic number.

1081995200 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 1081995200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1564248840).

1081995200 is an abundant number, since it is smaller than the sum of its proper divisors (2046502480).

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

1081995200 is a wasteful number, since it uses less digits than its factorization.

1081995200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4775 (or 4760 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 1081995200 is about 32893.6954445681. The cubic root of 1081995200 is about 1026.6169837842.

The spelling of 1081995200 in words is "one billion, eighty-one million, nine hundred ninety-five thousand, two hundred".