19630013 has 8 divisors (see below), whose sum is σ = 21869400. Its totient is φ = 17494848.

The previous prime is 19630007. The next prime is 19630027. The reversal of 19630013 is 31003691.

It can be written as a sum of positive squares in 4 ways, for example, as 3485689 + 16144324 = 1867^2 + 4018^2 .

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 19630013 - 2²⁴ = 2852797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19630003) 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, 25658 + ... + 26411.

It is an arithmetic number, because the mean of its divisors is an integer number (2733675).

Almost surely, 2^19630013 is an apocalyptic number.

19630013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19630013 is a deficient number, since it is larger than the sum of its proper divisors (2239387).

19630013 is a wasteful number, since it uses less digits than its factorization.

19630013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52111.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 19630013 is about 4430.5770504529. The cubic root of 19630013 is about 269.7575006010.

The spelling of 19630013 in words is "nineteen million, six hundred thirty thousand, thirteen".