19214161 has 2 divisors, whose sum is σ = 19214162. Its totient is φ = 19214160.

The previous prime is 19214159. The next prime is 19214179. The reversal of 19214161 is 16141291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13549761 + 5664400 = 3681^2 + 2380^2 .

It is a cyclic number.

It is not a de Polignac number, because 19214161 - 2¹ = 19214159 is a prime.

Together with 19214159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (19214101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9607080 + 9607081.

It is an arithmetic number, because the mean of its divisors is an integer number (9607081).

Almost surely, 2^19214161 is an apocalyptic number.

It is an amenable number.

19214161 is a deficient number, since it is larger than the sum of its proper divisors (1).

19214161 is an equidigital number, since it uses as much as digits as its factorization.

19214161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 25.

The square root of 19214161 is about 4383.3960578529. The cubic root of 19214161 is about 267.8389960769.

The spelling of 19214161 in words is "nineteen million, two hundred fourteen thousand, one hundred sixty-one".