1009897056 has 108 divisors (see below), whose sum is σ = 3340822212. Its totient is φ = 288537984.

The previous prime is 1009897003. The next prime is 1009897061. The reversal of 1009897056 is 6507989001.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 21670 + ... + 49893.

It is an arithmetic number, because the mean of its divisors is an integer number (30933539).

Almost surely, 2^1009897056 is an apocalyptic number.

1009897056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1009897056 is an abundant number, since it is smaller than the sum of its proper divisors (2330925156).

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

1009897056 is a wasteful number, since it uses less digits than its factorization.

1009897056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71593 (or 71575 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 1009897056 is about 31778.8775132162. The cubic root of 1009897056 is about 1003.2881945921.

The spelling of 1009897056 in words is "one billion, nine million, eight hundred ninety-seven thousand, fifty-six".