19113493 has 8 divisors (see below), whose sum is σ = 21878912. Its totient is φ = 16356816.

The previous prime is 19113467. The next prime is 19113499. The reversal of 19113493 is 39431191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19113493 - 2⁵ = 19113461 is a prime.

It is a super-2 number, since 2×19113493² = 730651229322098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19113499) 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 in 7 ways as a sum of consecutive naturals, for example, 3496 + ... + 7102.

It is an arithmetic number, because the mean of its divisors is an integer number (2734864).

Almost surely, 2^19113493 is an apocalyptic number.

It is an amenable number.

19113493 is a deficient number, since it is larger than the sum of its proper divisors (2765419).

19113493 is an equidigital number, since it uses as much as digits as its factorization.

19113493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4371.

The product of its digits is 2916, while the sum is 31.

The square root of 19113493 is about 4371.8981003678. The cubic root of 19113493 is about 267.3704173377.

The spelling of 19113493 in words is "nineteen million, one hundred thirteen thousand, four hundred ninety-three".