19418941 has 2 divisors, whose sum is σ = 19418942. Its totient is φ = 19418940.

The previous prime is 19418939. The next prime is 19418957. The reversal of 19418941 is 14981491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13293316 + 6125625 = 3646^2 + 2475^2 .

It is a cyclic number.

It is not a de Polignac number, because 19418941 - 2¹ = 19418939 is a prime.

It is a super-2 number, since 2×19418941² = 754190539122962, which contains 22 as substring.

Together with 19418939, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 19418941.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19418921) 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, 9709470 + 9709471.

It is an arithmetic number, because the mean of its divisors is an integer number (9709471).

Almost surely, 2^19418941 is an apocalyptic number.

It is an amenable number.

19418941 is a deficient number, since it is larger than the sum of its proper divisors (1).

19418941 is an equidigital number, since it uses as much as digits as its factorization.

19418941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 37.

The square root of 19418941 is about 4406.6927508053. The cubic root of 19418941 is about 268.7871572205.

The spelling of 19418941 in words is "nineteen million, four hundred eighteen thousand, nine hundred forty-one".