19148923 has 2 divisors, whose sum is σ = 19148924. Its totient is φ = 19148922.

The previous prime is 19148911. The next prime is 19148929. The reversal of 19148923 is 32984191.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19148923 is a prime.

It is not a weakly prime, because it can be changed into another prime (19148929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9574461 + 9574462.

It is an arithmetic number, because the mean of its divisors is an integer number (9574462).

Almost surely, 2^19148923 is an apocalyptic number.

19148923 is a deficient number, since it is larger than the sum of its proper divisors (1).

19148923 is an equidigital number, since it uses as much as digits as its factorization.

19148923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 37.

The square root of 19148923 is about 4375.9482400961. The cubic root of 19148923 is about 267.5355203654.

The spelling of 19148923 in words is "nineteen million, one hundred forty-eight thousand, nine hundred twenty-three".