9006731861 has 8 divisors (see below), whose sum is σ = 9659653920. Its totient is φ = 8371698192.

The previous prime is 9006731857. The next prime is 9006731873. The reversal of 9006731861 is 1681376009.

9006731861 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 9006731861 - 2² = 9006731857 is a prime.

It is a super-2 number, since 2×9006731861² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9006731831) 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 7 ways as a sum of consecutive naturals, for example, 4471055 + ... + 4473068.

It is an arithmetic number, because the mean of its divisors is an integer number (1207456740).

Almost surely, 2^9006731861 is an apocalyptic number.

It is an amenable number.

9006731861 is a deficient number, since it is larger than the sum of its proper divisors (652922059).

9006731861 is a wasteful number, since it uses less digits than its factorization.

9006731861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8944195.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 9006731861 is about 94903.8031956570. The cubic root of 9006731861 is about 2080.6023173228.

The spelling of 9006731861 in words is "nine billion, six million, seven hundred thirty-one thousand, eight hundred sixty-one".