19382813 has 8 divisors (see below), whose sum is σ = 20363136. Its totient is φ = 18414000.

The previous prime is 19382807. The next prime is 19382827. The reversal of 19382813 is 31828391.

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 19382813 - 2⁸ = 19382557 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 (19382833) 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, 683 + ... + 6263.

It is an arithmetic number, because the mean of its divisors is an integer number (2545392).

Almost surely, 2^19382813 is an apocalyptic number.

It is an amenable number.

19382813 is a deficient number, since it is larger than the sum of its proper divisors (980323).

19382813 is a wasteful number, since it uses less digits than its factorization.

19382813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5755.

The product of its digits is 10368, while the sum is 35.

The square root of 19382813 is about 4402.5916231238. The cubic root of 19382813 is about 268.6203652419.

The spelling of 19382813 in words is "nineteen million, three hundred eighty-two thousand, eight hundred thirteen".