1009910920 has 32 divisors (see below), whose sum is σ = 2273961600. Its totient is φ = 403668928.

The previous prime is 1009910917. The next prime is 1009910921. The reversal of 1009910920 is 290199001.

It is not an unprimeable number, because it can be changed into a prime (1009910921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50991 + ... + 67969.

It is an arithmetic number, because the mean of its divisors is an integer number (71061300).

Almost surely, 2^1009910920 is an apocalyptic number.

1009910920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1009910920 is an abundant number, since it is smaller than the sum of its proper divisors (1264050680).

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

1009910920 is a wasteful number, since it uses less digits than its factorization.

1009910920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18477 (or 18473 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 31.

The square root of 1009910920 is about 31779.0956447788. The cubic root of 1009910920 is about 1003.2927856620.

The spelling of 1009910920 in words is "one billion, nine million, nine hundred ten thousand, nine hundred twenty".