19013385 has 24 divisors (see below), whose sum is σ = 31458240. Its totient is φ = 9805920.

The previous prime is 19013383. The next prime is 19013411. The reversal of 19013385 is 58331091.

It is a happy number.

It is not a de Polignac number, because 19013385 - 2¹ = 19013383 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (19013383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13756 + ... + 15074.

It is an arithmetic number, because the mean of its divisors is an integer number (1310760).

Almost surely, 2^19013385 is an apocalyptic number.

19013385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19013385 is a deficient number, since it is larger than the sum of its proper divisors (12444855).

19013385 is a wasteful number, since it uses less digits than its factorization.

19013385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389 (or 1358 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 19013385 is about 4360.4340380288. The cubic root of 19013385 is about 266.9028107884.

The spelling of 19013385 in words is "nineteen million, thirteen thousand, three hundred eighty-five".