9045990646 has 24 divisors (see below), whose sum is σ = 17219271816. Its totient is φ = 3524411520.

The previous prime is 9045990641. The next prime is 9045990659. The reversal of 9045990646 is 6460995409.

It is a junction number, because it is equal to n+sod(n) for n = 9045990593 and 9045990602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9045990641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4194651 + ... + 4196806.

It is an arithmetic number, because the mean of its divisors is an integer number (717469659).

Almost surely, 2^9045990646 is an apocalyptic number.

9045990646 is a deficient number, since it is larger than the sum of its proper divisors (8173281170).

9045990646 is a wasteful number, since it uses less digits than its factorization.

9045990646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8391484 (or 8391477 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 52.

The square root of 9045990646 is about 95110.4129209836. The cubic root of 9045990646 is about 2083.6209307980.

The spelling of 9045990646 in words is "nine billion, forty-five million, nine hundred ninety thousand, six hundred forty-six".