18896881 has 8 divisors (see below), whose sum is σ = 19334304. Its totient is φ = 18464160.

The previous prime is 18896833. The next prime is 18896897. The reversal of 18896881 is 18869881.

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 18896881 - 2¹¹ = 18894833 is a prime.

It is a super-2 number, since 2×18896881² = 714184223056322, which contains 22 as substring.

18896881 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18896281) 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, 7701 + ... + 9853.

It is an arithmetic number, because the mean of its divisors is an integer number (2416788).

Almost surely, 2^18896881 is an apocalyptic number.

It is an amenable number.

18896881 is a deficient number, since it is larger than the sum of its proper divisors (437423).

18896881 is a wasteful number, since it uses less digits than its factorization.

18896881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351.

The product of its digits is 221184, while the sum is 49.

The square root of 18896881 is about 4347.0542899761. The cubic root of 18896881 is about 266.3565469517.

Subtracting from 18896881 its reverse (18869881), we obtain a cube (27000 = 30³).

The spelling of 18896881 in words is "eighteen million, eight hundred ninety-six thousand, eight hundred eighty-one".