19520013 has 8 divisors (see below), whose sum is σ = 26057376. Its totient is φ = 12998000.

The previous prime is 19520003. The next prime is 19520021. The reversal of 19520013 is 31002591.

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

It is a cyclic number.

It is not a de Polignac number, because 19520013 - 2⁶ = 19519949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19520003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438 + ... + 6263.

It is an arithmetic number, because the mean of its divisors is an integer number (3257172).

Almost surely, 2^19520013 is an apocalyptic number.

It is an amenable number.

19520013 is a deficient number, since it is larger than the sum of its proper divisors (6537363).

19520013 is an equidigital number, since it uses as much as digits as its factorization.

19520013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7675.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 19520013 is about 4418.1458780805. The cubic root of 19520013 is about 269.2526796632.

The spelling of 19520013 in words is "nineteen million, five hundred twenty thousand, thirteen".