1001000920 has 32 divisors (see below), whose sum is σ = 2255043600. Its totient is φ = 399904128.

The previous prime is 1001000887. The next prime is 1001000929. The reversal of 1001000920 is 290001001.

It is a self number, because there is not a number n which added to its sum of digits gives 1001000920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001000929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18067 + ... + 48253.

Almost surely, 2^1001000920 is an apocalyptic number.

1001000920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001000920 is an abundant number, since it is smaller than the sum of its proper divisors (1254042680).

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

1001000920 is a wasteful number, since it uses less digits than its factorization.

1001000920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31027 (or 31023 counting only the distinct ones).

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

The square root of 1001000920 is about 31638.5985783189. The cubic root of 1001000920 is about 1000.3335287462. Note that the first 3 decimals are identical.

Adding to 1001000920 its reverse (290001001), we get a palindrome (1291001921).

The spelling of 1001000920 in words is "one billion, one million, nine hundred twenty", and thus it is an aban number.