9145220640 has 48 divisors (see below), whose sum is σ = 28807446528. Its totient is φ = 2438725376.

The previous prime is 9145220621. The next prime is 9145220653. The reversal of 9145220640 is 460225419.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9525792 + ... + 9526751.

It is an arithmetic number, because the mean of its divisors is an integer number (600155136).

Almost surely, 2^9145220640 is an apocalyptic number.

It is an amenable number.

9145220640 is an abundant number, since it is smaller than the sum of its proper divisors (19662225888).

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

9145220640 is a wasteful number, since it uses less digits than its factorization.

9145220640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19052561 (or 19052553 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 9145220640 is about 95630.6469705188. The cubic root of 9145220640 is about 2091.2120012455.

The spelling of 9145220640 in words is "nine billion, one hundred forty-five million, two hundred twenty thousand, six hundred forty".