9004945731 has 8 divisors (see below), whose sum is σ = 12007898880. Its totient is φ = 6002644872.

The previous prime is 9004945711. The next prime is 9004945739. The reversal of 9004945731 is 1375494009.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9004945731 - 2⁶ = 9004945667 is a prime.

It is a super-2 number, since 2×9004945731² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9004945739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129895 + ... + 186768.

It is an arithmetic number, because the mean of its divisors is an integer number (1500987360).

Almost surely, 2^9004945731 is an apocalyptic number.

9004945731 is a deficient number, since it is larger than the sum of its proper divisors (3002953149).

9004945731 is a wasteful number, since it uses less digits than its factorization.

9004945731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326145.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 9004945731 is about 94894.3925161018. The cubic root of 9004945731 is about 2080.4647730963.

The spelling of 9004945731 in words is "nine billion, four million, nine hundred forty-five thousand, seven hundred thirty-one".