18852947 has 2 divisors, whose sum is σ = 18852948. Its totient is φ = 18852946.

The previous prime is 18852937. The next prime is 18852971. The reversal of 18852947 is 74925881.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18852947 - 2⁴ = 18852931 is a prime.

It is a super-2 number, since 2×18852947² = 710867221169618, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18852898 and 18852907.

It is not a weakly prime, because it can be changed into another prime (18852917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9426473 + 9426474.

It is an arithmetic number, because the mean of its divisors is an integer number (9426474).

Almost surely, 2^18852947 is an apocalyptic number.

18852947 is a deficient number, since it is larger than the sum of its proper divisors (1).

18852947 is an equidigital number, since it uses as much as digits as its factorization.

18852947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 44.

The square root of 18852947 is about 4341.9980423763. The cubic root of 18852947 is about 266.1499663147.

It can be divided in two parts, 188 and 52947, that added together give a palindrome (53135).

The spelling of 18852947 in words is "eighteen million, eight hundred fifty-two thousand, nine hundred forty-seven".