1861135163 has 8 divisors (see below), whose sum is σ = 1971019008. Its totient is φ = 1751296384.

The previous prime is 1861135153. The next prime is 1861135169. The reversal of 1861135163 is 3615311681.

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 1861135163 - 2²⁸ = 1592699707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1861135169) 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, 113045 + ... + 128457.

It is an arithmetic number, because the mean of its divisors is an integer number (246377376).

Almost surely, 2^1861135163 is an apocalyptic number.

1861135163 is a deficient number, since it is larger than the sum of its proper divisors (109883845).

1861135163 is a wasteful number, since it uses less digits than its factorization.

1861135163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22533.

The product of its digits is 12960, while the sum is 35.

The square root of 1861135163 is about 43140.8757792421. The cubic root of 1861135163 is about 1230.0590808204.

The spelling of 1861135163 in words is "one billion, eight hundred sixty-one million, one hundred thirty-five thousand, one hundred sixty-three".