9945107090 has 16 divisors (see below), whose sum is σ = 18238952088. Its totient is φ = 3902985216.

The previous prime is 9945107047. The next prime is 9945107093. The reversal of 9945107090 is 907015499.

It can be written as a sum of positive squares in 4 ways, for example, as 9265410049 + 679697041 = 96257^2 + 26071^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9945107093) by changing a digit.

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, 9381647 + ... + 9382706.

Almost surely, 2^9945107090 is an apocalyptic number.

9945107090 is a deficient number, since it is larger than the sum of its proper divisors (8293844998).

9945107090 is a wasteful number, since it uses less digits than its factorization.

9945107090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18764413.

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 9945107090 is about 99725.1577587120. The cubic root of 9945107090 is about 2150.4853485129.

The spelling of 9945107090 in words is "nine billion, nine hundred forty-five million, one hundred seven thousand, ninety".