19121093 has 2 divisors, whose sum is σ = 19121094. Its totient is φ = 19121092.

The previous prime is 19121083. The next prime is 19121101. The reversal of 19121093 is 39012191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18515809 + 605284 = 4303^2 + 778^2 .

It is an emirp because it is prime and its reverse (39012191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19121093 - 2⁶ = 19121029 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19121083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9560546 + 9560547.

It is an arithmetic number, because the mean of its divisors is an integer number (9560547).

Almost surely, 2^19121093 is an apocalyptic number.

It is an amenable number.

19121093 is a deficient number, since it is larger than the sum of its proper divisors (1).

19121093 is an equidigital number, since it uses as much as digits as its factorization.

19121093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 19121093 is about 4372.7672016699. The cubic root of 19121093 is about 267.4058503501.

The spelling of 19121093 in words is "nineteen million, one hundred twenty-one thousand, ninety-three".