1000200091 has 16 divisors (see below), whose sum is σ = 1116864000. Its totient is φ = 887914080.

The previous prime is 1000200079. The next prime is 1000200101. The reversal of 1000200091 is 1900020001.

It is a cyclic number.

It is not a de Polignac number, because 1000200091 - 2⁵ = 1000200059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000200001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256045 + ... + 259921.

It is an arithmetic number, because the mean of its divisors is an integer number (69804000).

Almost surely, 2^1000200091 is an apocalyptic number.

1000200091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1000200091 is a deficient number, since it is larger than the sum of its proper divisors (116663909).

1000200091 is a wasteful number, since it uses less digits than its factorization.

1000200091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4434.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1000200091 is about 31625.9401599383. The cubic root of 1000200091 is about 1000.0666925520.

Adding to 1000200091 its reverse (1900020001), we get a palindrome (2900220092).

The spelling of 1000200091 in words is "one billion, two hundred thousand, ninety-one".