19272013 has 2 divisors, whose sum is σ = 19272014. Its totient is φ = 19272012.

The previous prime is 19271983. The next prime is 19272059. The reversal of 19272013 is 31027291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19245769 + 26244 = 4387^2 + 162^2 .

It is an emirp because it is prime and its reverse (31027291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19272013 - 2⁵ = 19271981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19272083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9636006 + 9636007.

It is an arithmetic number, because the mean of its divisors is an integer number (9636007).

Almost surely, 2^19272013 is an apocalyptic number.

It is an amenable number.

19272013 is a deficient number, since it is larger than the sum of its proper divisors (1).

19272013 is an equidigital number, since it uses as much as digits as its factorization.

19272013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 19272013 is about 4389.9900911050. The cubic root of 19272013 is about 268.1075392661.

The spelling of 19272013 in words is "nineteen million, two hundred seventy-two thousand, thirteen".