19693413 has 6 divisors (see below), whose sum is σ = 28446054. Its totient is φ = 13128936.

The previous prime is 19693411. The next prime is 19693417. The reversal of 19693413 is 31439691.

It can be written as a sum of positive squares in only one way, i.e., 14884164 + 4809249 = 3858^2 + 2193^2 .

It is not a de Polignac number, because 19693413 - 2¹ = 19693411 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19693411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1094070 + ... + 1094087.

It is an arithmetic number, because the mean of its divisors is an integer number (4741009).

Almost surely, 2^19693413 is an apocalyptic number.

It is an amenable number.

19693413 is a deficient number, since it is larger than the sum of its proper divisors (8752641).

19693413 is a wasteful number, since it uses less digits than its factorization.

19693413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188163 (or 2188160 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 19693413 is about 4437.7261069156. The cubic root of 19693413 is about 270.0476047748.

The spelling of 19693413 in words is "nineteen million, six hundred ninety-three thousand, four hundred thirteen".