9481783009 has 4 divisors (see below), whose sum is σ = 9980824240. Its totient is φ = 8982741780.

The previous prime is 9481782991. The next prime is 9481783027. The reversal of 9481783009 is 9003871849.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (9481782991) and next prime (9481783027).

It is a cyclic number.

It is not a de Polignac number, because 9481783009 - 2¹¹ = 9481780961 is a prime.

It is a super-2 number, since 2×9481783009² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9481783309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249520587 + ... + 249520624.

It is an arithmetic number, because the mean of its divisors is an integer number (2495206060).

Almost surely, 2^9481783009 is an apocalyptic number.

It is an amenable number.

9481783009 is a deficient number, since it is larger than the sum of its proper divisors (499041231).

9481783009 is a wasteful number, since it uses less digits than its factorization.

9481783009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499041230.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 9481783009 is about 97374.4474130662. The cubic root of 9481783009 is about 2116.5571722088.

The spelling of 9481783009 in words is "nine billion, four hundred eighty-one million, seven hundred eighty-three thousand, nine".