19281401 has 2 divisors, whose sum is σ = 19281402. Its totient is φ = 19281400.

The previous prime is 19281389. The next prime is 19281413. The reversal of 19281401 is 10418291.

It is a balanced prime because it is at equal distance from previous prime (19281389) and next prime (19281413).

It can be written as a sum of positive squares in only one way, i.e., 11215801 + 8065600 = 3349^2 + 2840^2 .

It is a cyclic number.

It is not a de Polignac number, because 19281401 - 2¹⁸ = 19019257 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (19281601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9640700 + 9640701.

It is an arithmetic number, because the mean of its divisors is an integer number (9640701).

Almost surely, 2^19281401 is an apocalyptic number.

It is an amenable number.

19281401 is a deficient number, since it is larger than the sum of its proper divisors (1).

19281401 is an equidigital number, since it uses as much as digits as its factorization.

19281401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 19281401 is about 4391.0592116254. The cubic root of 19281401 is about 268.1510667202.

Adding to 19281401 its reverse (10418291), we get a palindrome (29699692).

The spelling of 19281401 in words is "nineteen million, two hundred eighty-one thousand, four hundred one".