9857090161 has 16 divisors (see below), whose sum is σ = 10991419200. Its totient is φ = 8784834048.

The previous prime is 9857090143. The next prime is 9857090171. The reversal of 9857090161 is 1610907589.

It is a happy number.

It is not a de Polignac number, because 9857090161 - 2⁵ = 9857090129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9857090171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 827101 + ... + 838933.

It is an arithmetic number, because the mean of its divisors is an integer number (686963700).

Almost surely, 2^9857090161 is an apocalyptic number.

It is an amenable number.

9857090161 is a deficient number, since it is larger than the sum of its proper divisors (1134329039).

9857090161 is a wasteful number, since it uses less digits than its factorization.

9857090161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14448.

The product of its (nonzero) digits is 136080, while the sum is 46.

The square root of 9857090161 is about 99282.8794959131. The cubic root of 9857090161 is about 2144.1224115414.

The spelling of 9857090161 in words is "nine billion, eight hundred fifty-seven million, ninety thousand, one hundred sixty-one".