187214441 has 2 divisors, whose sum is σ = 187214442. Its totient is φ = 187214440.

The previous prime is 187214431. The next prime is 187214449. The reversal of 187214441 is 144412781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101929216 + 85285225 = 10096^2 + 9235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-187214441 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 187214398 and 187214407.

It is not a weakly prime, because it can be changed into another prime (187214449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93607220 + 93607221.

It is an arithmetic number, because the mean of its divisors is an integer number (93607221).

Almost surely, 2^187214441 is an apocalyptic number.

It is an amenable number.

187214441 is a deficient number, since it is larger than the sum of its proper divisors (1).

187214441 is an equidigital number, since it uses as much as digits as its factorization.

187214441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7168, while the sum is 32.

The square root of 187214441 is about 13682.6328241315. The cubic root of 187214441 is about 572.0664105738.

The spelling of 187214441 in words is "one hundred eighty-seven million, two hundred fourteen thousand, four hundred forty-one".