1075821900 has 36 divisors (see below), whose sum is σ = 3112712232. Its totient is φ = 286885760.

The previous prime is 1075821889. The next prime is 1075821907. The reversal of 1075821900 is 91285701.

It is a super-2 number, since 2×1075821900² = 2314785521039220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1075821907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1792737 + ... + 1793336.

Almost surely, 2^1075821900 is an apocalyptic number.

1075821900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1075821900 is an abundant number, since it is smaller than the sum of its proper divisors (2036890332).

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

1075821900 is a wasteful number, since it uses less digits than its factorization.

1075821900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3586090 (or 3586083 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 1075821900 is about 32799.7240842053. The cubic root of 1075821900 is about 1024.6608118230.

The spelling of 1075821900 in words is "one billion, seventy-five million, eight hundred twenty-one thousand, nine hundred".