19013093 has 6 divisors (see below), whose sum is σ = 20898822. Its totient is φ = 17284520.

The previous prime is 19013087. The next prime is 19013101. The reversal of 19013093 is 39031091.

It can be written as a sum of positive squares in only one way, i.e., 12159169 + 6853924 = 3487^2 + 2618^2 .

It is not a de Polignac number, because 19013093 - 2⁴ = 19013077 is a prime.

It is a super-2 number, since 2×19013093² = 722995410853298, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19013083) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78446 + ... + 78687.

It is an arithmetic number, because the mean of its divisors is an integer number (3483137).

Almost surely, 2^19013093 is an apocalyptic number.

It is an amenable number.

19013093 is a deficient number, since it is larger than the sum of its proper divisors (1885729).

19013093 is a wasteful number, since it uses less digits than its factorization.

19013093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157155 (or 157144 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 26.

The square root of 19013093 is about 4360.4005549949. The cubic root of 19013093 is about 266.9014444523.

It can be divided in two parts, 1901 and 3093, that added together give a palindrome (4994).

The spelling of 19013093 in words is "nineteen million, thirteen thousand, ninety-three".