1009545500 has 48 divisors (see below), whose sum is σ = 2226788928. Its totient is φ = 399800000.

The previous prime is 1009545469. The next prime is 1009545541. The reversal of 1009545500 is 55459001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40505 + ... + 60495.

It is an arithmetic number, because the mean of its divisors is an integer number (46391436).

Almost surely, 2^1009545500 is an apocalyptic number.

1009545500 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 1009545500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1113394464).

1009545500 is an abundant number, since it is smaller than the sum of its proper divisors (1217243428).

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

1009545500 is a wasteful number, since it uses less digits than its factorization.

1009545500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20111 (or 20099 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 1009545500 is about 31773.3457476546. The cubic root of 1009545500 is about 1003.1717626192.

The spelling of 1009545500 in words is "one billion, nine million, five hundred forty-five thousand, five hundred".