9000630981 has 10 divisors (see below), whose sum is σ = 13445387142. Its totient is φ = 6000420600.

The previous prime is 9000630973. The next prime is 9000630997. The reversal of 9000630981 is 1890360009.

9000630981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8938757025 + 61873956 = 94545^2 + 7866^2 .

It is not a de Polignac number, because 9000630981 - 2³ = 9000630973 is a prime.

It is a super-2 number, since 2×9000630981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9000630911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 55559370 + ... + 55559531.

Almost surely, 2^9000630981 is an apocalyptic number.

It is an amenable number.

9000630981 is a deficient number, since it is larger than the sum of its proper divisors (4444756161).

9000630981 is a wasteful number, since it uses less digits than its factorization.

9000630981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111118913 (or 111118904 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 9000630981 is about 94871.6553086326. The cubic root of 9000630981 is about 2080.1324327815.

The spelling of 9000630981 in words is "nine billion, six hundred thirty thousand, nine hundred eighty-one".