19106401 has 2 divisors, whose sum is σ = 19106402. Its totient is φ = 19106400.

The previous prime is 19106357. The next prime is 19106407. The reversal of 19106401 is 10460191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10112400 + 8994001 = 3180^2 + 2999^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19106401 is a prime.

It is not a weakly prime, because it can be changed into another prime (19106407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9553200 + 9553201.

It is an arithmetic number, because the mean of its divisors is an integer number (9553201).

Almost surely, 2^19106401 is an apocalyptic number.

It is an amenable number.

19106401 is a deficient number, since it is larger than the sum of its proper divisors (1).

19106401 is an equidigital number, since it uses as much as digits as its factorization.

19106401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 19106401 is about 4371.0869357632. The cubic root of 19106401 is about 267.3373442695.

Adding to 19106401 its reverse (10460191), we get a palindrome (29566592).

The spelling of 19106401 in words is "nineteen million, one hundred six thousand, four hundred one".