18896947 has 2 divisors, whose sum is σ = 18896948. Its totient is φ = 18896946.

The previous prime is 18896939. The next prime is 18896959. The reversal of 18896947 is 74969881.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18896947 - 2³ = 18896939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18896894 and 18896903.

It is not a weakly prime, because it can be changed into another prime (18896047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9448473 + 9448474.

It is an arithmetic number, because the mean of its divisors is an integer number (9448474).

Almost surely, 2^18896947 is an apocalyptic number.

18896947 is a deficient number, since it is larger than the sum of its proper divisors (1).

18896947 is an equidigital number, since it uses as much as digits as its factorization.

18896947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 52.

The square root of 18896947 is about 4347.0618813171. The cubic root of 18896947 is about 266.3568570472.

It can be divided in two parts, 1889 and 6947, that added together give a square (8836 = 94²).

The spelling of 18896947 in words is "eighteen million, eight hundred ninety-six thousand, nine hundred forty-seven".