18895969 has 4 divisors (see below), whose sum is σ = 18930096. Its totient is φ = 18861844.

The previous prime is 18895951. The next prime is 18895979. The reversal of 18895969 is 96959881.

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 a cyclic number.

It is not a de Polignac number, because 18895969 - 2¹³ = 18887777 is a prime.

It is a super-2 number, since 2×18895969² = 714115288897922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18895979) 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, 16219 + ... + 17344.

It is an arithmetic number, because the mean of its divisors is an integer number (4732524).

Almost surely, 2^18895969 is an apocalyptic number.

It is an amenable number.

18895969 is a deficient number, since it is larger than the sum of its proper divisors (34127).

18895969 is an equidigital number, since it uses as much as digits as its factorization.

18895969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34126.

The product of its digits is 1399680, while the sum is 55.

The square root of 18895969 is about 4346.9493900896. The cubic root of 18895969 is about 266.3522619222.

It can be divided in two parts, 188959 and 69, that multiplied together give a triangular number (13038171 = T₅₁₀₆).

The spelling of 18895969 in words is "eighteen million, eight hundred ninety-five thousand, nine hundred sixty-nine".