19274401 has 2 divisors, whose sum is σ = 19274402. Its totient is φ = 19274400.

The previous prime is 19274389. The next prime is 19274429. The reversal of 19274401 is 10447291.

It is an a-pointer prime, because the next prime (19274429) can be obtained adding 19274401 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16120225 + 3154176 = 4015^2 + 1776^2 .

It is an emirp because it is prime and its reverse (10447291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19274401 - 2⁵ = 19274369 is a prime.

It is a Chen prime.

It is equal to p_1227367 and since 19274401 and 1227367 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19274401.

It is not a weakly prime, because it can be changed into another prime (19274471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9637200 + 9637201.

It is an arithmetic number, because the mean of its divisors is an integer number (9637201).

Almost surely, 2^19274401 is an apocalyptic number.

It is an amenable number.

19274401 is a deficient number, since it is larger than the sum of its proper divisors (1).

19274401 is an equidigital number, since it uses as much as digits as its factorization.

19274401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 19274401 is about 4390.2620650708. The cubic root of 19274401 is about 268.1186125664.

It can be divided in two parts, 1927 and 4401, that added together give a triangular number (6328 = T₁₁₂).

The spelling of 19274401 in words is "nineteen million, two hundred seventy-four thousand, four hundred one".