18869896 has 8 divisors (see below), whose sum is σ = 35381070. Its totient is φ = 9434944.

The previous prime is 18869891. The next prime is 18869927. The reversal of 18869896 is 69896881.

It can be written as a sum of positive squares in only one way, i.e., 13176900 + 5692996 = 3630^2 + 2386^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (18869891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1179361 + ... + 1179376.

Almost surely, 2^18869896 is an apocalyptic number.

It is an amenable number.

18869896 is a deficient number, since it is larger than the sum of its proper divisors (16511174).

18869896 is a wasteful number, since it uses less digits than its factorization.

18869896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358743 (or 2358739 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 55.

The square root of 18869896 is about 4343.9493551376. The cubic root of 18869896 is about 266.2296996432.

The spelling of 18869896 in words is "eighteen million, eight hundred sixty-nine thousand, eight hundred ninety-six".