19379965 has 24 divisors (see below), whose sum is σ = 25893504. Its totient is φ = 13912800.

The previous prime is 19379963. The next prime is 19379977. The reversal of 19379965 is 56997391.

It is not a de Polignac number, because 19379965 - 2¹ = 19379963 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 (19379963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62160 + ... + 62470.

It is an arithmetic number, because the mean of its divisors is an integer number (1078896).

Almost surely, 2^19379965 is an apocalyptic number.

It is an amenable number.

19379965 is a deficient number, since it is larger than the sum of its proper divisors (6513539).

19379965 is a wasteful number, since it uses less digits than its factorization.

19379965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 430 counting only the distinct ones).

The product of its digits is 459270, while the sum is 49.

The square root of 19379965 is about 4402.2681653893. The cubic root of 19379965 is about 268.6072080827.

The spelling of 19379965 in words is "nineteen million, three hundred seventy-nine thousand, nine hundred sixty-five".