18893161 has 8 divisors (see below), whose sum is σ = 21806784. Its totient is φ = 16033200.

The previous prime is 18893141. The next prime is 18893179. The reversal of 18893161 is 16139881.

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 18893161 - 2⁷ = 18893033 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18893161.

It is not an unprimeable number, because it can be changed into a prime (18893101) 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, 12655 + ... + 14068.

It is an arithmetic number, because the mean of its divisors is an integer number (2725848).

Almost surely, 2^18893161 is an apocalyptic number.

It is an amenable number.

18893161 is a deficient number, since it is larger than the sum of its proper divisors (2913623).

18893161 is a wasteful number, since it uses less digits than its factorization.

18893161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26831.

The product of its digits is 10368, while the sum is 37.

The square root of 18893161 is about 4346.6263929627. The cubic root of 18893161 is about 266.3390676760.

It can be divided in two parts, 1889 and 3161, that added together give a triangular number (5050 = T₁₀₀).

The spelling of 18893161 in words is "eighteen million, eight hundred ninety-three thousand, one hundred sixty-one".