9011997146 has 8 divisors (see below), whose sum is σ = 13773052404. Its totient is φ = 4420979680.

The previous prime is 9011997133. The next prime is 9011997173. The reversal of 9011997146 is 6417991109.

It can be written as a sum of positive squares in 2 ways, for example, as 8931195025 + 80802121 = 94505^2 + 8989^2 .

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9011997146.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42509315 + ... + 42509526.

Almost surely, 2^9011997146 is an apocalyptic number.

9011997146 is a deficient number, since it is larger than the sum of its proper divisors (4761055258).

9011997146 is a wasteful number, since it uses less digits than its factorization.

9011997146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85018896.

The product of its (nonzero) digits is 122472, while the sum is 47.

The square root of 9011997146 is about 94931.5392585625. The cubic root of 9011997146 is about 2081.0076744970.

The spelling of 9011997146 in words is "nine billion, eleven million, nine hundred ninety-seven thousand, one hundred forty-six".