13938643498 has 32 divisors (see below), whose sum is σ = 22618766016. Its totient is φ = 6404012928.

The previous prime is 13938643489. The next prime is 13938643513. The reversal of 13938643498 is 89434683931.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6213165 + ... + 6215407.

It is an arithmetic number, because the mean of its divisors is an integer number (706836438).

Almost surely, 2^13938643498 is an apocalyptic number.

13938643498 is a deficient number, since it is larger than the sum of its proper divisors (8680122518).

13938643498 is a wasteful number, since it uses less digits than its factorization.

13938643498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3238.

The product of its digits is 13436928, while the sum is 58.

The spelling of 13938643498 in words is "thirteen billion, nine hundred thirty-eight million, six hundred forty-three thousand, four hundred ninety-eight".