10439663918 has 8 divisors (see below), whose sum is σ = 15665918400. Its totient is φ = 5217691120.

The previous prime is 10439663917. The next prime is 10439663929. The reversal of 10439663918 is 81936693401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×10439663918² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10439663911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1064318 + ... + 1074081.

It is an arithmetic number, because the mean of its divisors is an integer number (1958239800).

Almost surely, 2^10439663918 is an apocalyptic number.

10439663918 is a deficient number, since it is larger than the sum of its proper divisors (5226254482).

10439663918 is a wasteful number, since it uses less digits than its factorization.

10439663918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140842.

The product of its (nonzero) digits is 839808, while the sum is 50.

The spelling of 10439663918 in words is "ten billion, four hundred thirty-nine million, six hundred sixty-three thousand, nine hundred eighteen".