19874401 has 2 divisors, whose sum is σ = 19874402. Its totient is φ = 19874400.

The previous prime is 19874383. The next prime is 19874419. The reversal of 19874401 is 10447891.

It is a balanced prime because it is at equal distance from previous prime (19874383) and next prime (19874419).

It can be written as a sum of positive squares in only one way, i.e., 19713600 + 160801 = 4440^2 + 401^2 .

It is a cyclic number.

It is not a de Polignac number, because 19874401 - 2¹¹ = 19872353 is a prime.

It is not a weakly prime, because it can be changed into another prime (19874801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9937200 + 9937201.

It is an arithmetic number, because the mean of its divisors is an integer number (9937201).

Almost surely, 2^19874401 is an apocalyptic number.

It is an amenable number.

19874401 is a deficient number, since it is larger than the sum of its proper divisors (1).

19874401 is an equidigital number, since it uses as much as digits as its factorization.

19874401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 19874401 is about 4458.0714440215. The cubic root of 19874401 is about 270.8723544776.

The spelling of 19874401 in words is "nineteen million, eight hundred seventy-four thousand, four hundred one".