19113612 has 48 divisors (see below), whose sum is σ = 51367680. Its totient is φ = 5418432.

The previous prime is 19113587. The next prime is 19113613. The reversal of 19113612 is 21631191.

It is not an unprimeable number, because it can be changed into a prime (19113613) 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 15 ways as a sum of consecutive naturals, for example, 10858 + ... + 12494.

It is an arithmetic number, because the mean of its divisors is an integer number (1070160).

Almost surely, 2^19113612 is an apocalyptic number.

19113612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19113612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25683840).

19113612 is an abundant number, since it is smaller than the sum of its proper divisors (32254068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19113612 is a wasteful number, since it uses less digits than its factorization.

19113612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790 (or 1788 counting only the distinct ones).

The product of its digits is 324, while the sum is 24.

The square root of 19113612 is about 4371.9117099960. The cubic root of 19113612 is about 267.3709722165.

The spelling of 19113612 in words is "nineteen million, one hundred thirteen thousand, six hundred twelve".