19795913 has 4 divisors (see below), whose sum is σ = 19881108. Its totient is φ = 19710720.

The previous prime is 19795901. The next prime is 19795927. The reversal of 19795913 is 31959791.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8952064 + 10843849 = 2992^2 + 3293^2 .

It is a cyclic number.

It is not a de Polignac number, because 19795913 - 2⁶ = 19795849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19705913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42248 + ... + 42713.

It is an arithmetic number, because the mean of its divisors is an integer number (4970277).

Almost surely, 2^19795913 is an apocalyptic number.

It is an amenable number.

19795913 is a deficient number, since it is larger than the sum of its proper divisors (85195).

19795913 is an equidigital number, since it uses as much as digits as its factorization.

19795913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85194.

The product of its digits is 76545, while the sum is 44.

The square root of 19795913 is about 4449.2598260834. The cubic root of 19795913 is about 270.5153076095.

The spelling of 19795913 in words is "nineteen million, seven hundred ninety-five thousand, nine hundred thirteen".