9015897880 has 128 divisors (see below), whose sum is σ = 23438522880. Its totient is φ = 3088926720.

The previous prime is 9015897859. The next prime is 9015897887. The reversal of 9015897880 is 887985109.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9015897887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 671392 + ... + 684688.

It is an arithmetic number, because the mean of its divisors is an integer number (183113460).

Almost surely, 2^9015897880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9015897880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11719261440).

9015897880 is an abundant number, since it is smaller than the sum of its proper divisors (14422625000).

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

9015897880 is a wasteful number, since it uses less digits than its factorization.

9015897880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13409 (or 13405 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 55.

The square root of 9015897880 is about 94952.0820203538. The cubic root of 9015897880 is about 2081.3078775249.

The spelling of 9015897880 in words is "nine billion, fifteen million, eight hundred ninety-seven thousand, eight hundred eighty".