19068493 has 4 divisors (see below), whose sum is σ = 19253728. Its totient is φ = 18883260.

The previous prime is 19068481. The next prime is 19068521. The reversal of 19068493 is 39486091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39486091 = 593 ⋅66587.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19068493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19068433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92463 + ... + 92668.

It is an arithmetic number, because the mean of its divisors is an integer number (4813432).

Almost surely, 2^19068493 is an apocalyptic number.

It is an amenable number.

19068493 is a deficient number, since it is larger than the sum of its proper divisors (185235).

19068493 is a wasteful number, since it uses less digits than its factorization.

19068493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185234.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 19068493 is about 4366.7485615730. The cubic root of 19068493 is about 267.1604239152.

The spelling of 19068493 in words is "nineteen million, sixty-eight thousand, four hundred ninety-three".