9849161858 has 8 divisors (see below), whose sum is σ = 14774163852. Its totient is φ = 4924440576.

The previous prime is 9849161843. The next prime is 9849161863. The reversal of 9849161858 is 8581619489.

It can be written as a sum of positive squares in 2 ways, for example, as 6101640769 + 3747521089 = 78113^2 + 61217^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 9849161797 and 9849161806.

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, 104066 + ... + 174722.

Almost surely, 2^9849161858 is an apocalyptic number.

9849161858 is a deficient number, since it is larger than the sum of its proper divisors (4925001994).

9849161858 is a wasteful number, since it uses less digits than its factorization.

9849161858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140356.

The product of its digits is 4976640, while the sum is 59.

The square root of 9849161858 is about 99242.9436181737. The cubic root of 9849161858 is about 2143.5474003380.

The spelling of 9849161858 in words is "nine billion, eight hundred forty-nine million, one hundred sixty-one thousand, eight hundred fifty-eight".