16863161 has 4 divisors (see below), whose sum is σ = 19272192. Its totient is φ = 14454132.

The previous prime is 16863137. The next prime is 16863173. The reversal of 16863161 is 16136861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 16863161 - 2²² = 12668857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16863131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1204505 + ... + 1204518.

It is an arithmetic number, because the mean of its divisors is an integer number (4818048).

Almost surely, 2^16863161 is an apocalyptic number.

It is an amenable number.

16863161 is a deficient number, since it is larger than the sum of its proper divisors (2409031).

16863161 is an equidigital number, since it uses as much as digits as its factorization.

16863161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409030.

The product of its digits is 5184, while the sum is 32.

The square root of 16863161 is about 4106.4779312691. The cubic root of 16863161 is about 256.4363945456.

The spelling of 16863161 in words is "sixteen million, eight hundred sixty-three thousand, one hundred sixty-one".