17939973407 has 8 divisors (see below), whose sum is σ = 18511682112. Its totient is φ = 17374652800.

The previous prime is 17939973379. The next prime is 17939973427. The reversal of 17939973407 is 70437993971.

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 17939973407 - 2¹⁰ = 17939972383 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 (17939973427) 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 7 ways as a sum of consecutive naturals, for example, 1591319 + ... + 1602552.

It is an arithmetic number, because the mean of its divisors is an integer number (2313960264).

Almost surely, 2^17939973407 is an apocalyptic number.

17939973407 is a deficient number, since it is larger than the sum of its proper divisors (571708705).

17939973407 is a wasteful number, since it uses less digits than its factorization.

17939973407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3194049.

The product of its (nonzero) digits is 9001692, while the sum is 59.

The spelling of 17939973407 in words is "seventeen billion, nine hundred thirty-nine million, nine hundred seventy-three thousand, four hundred seven".