19113393 has 12 divisors (see below), whose sum is σ = 27596400. Its totient is φ = 11761776.

The previous prime is 19113379. The next prime is 19113397. The reversal of 19113393 is 39331191.

It is a happy number.

It is not a de Polignac number, because 19113393 - 2⁴ = 19113377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19113393.

It is not an unprimeable number, because it can be changed into a prime (19113397) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18343 + ... + 19356.

It is an arithmetic number, because the mean of its divisors is an integer number (2299700).

Almost surely, 2^19113393 is an apocalyptic number.

19113393 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19113393 is a deficient number, since it is larger than the sum of its proper divisors (8483007).

19113393 is a wasteful number, since it uses less digits than its factorization.

19113393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37728 (or 37715 counting only the distinct ones).

The product of its digits is 2187, while the sum is 30.

The square root of 19113393 is about 4371.8866636728. The cubic root of 19113393 is about 267.3699510513.

The spelling of 19113393 in words is "nineteen million, one hundred thirteen thousand, three hundred ninety-three".