138746973963 has 8 divisors (see below), whose sum is σ = 199226424208. Its totient is φ = 85382753184.

The previous prime is 138746973943. The next prime is 138746973979. The reversal of 138746973963 is 369379647831.

It is a happy number.

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

It is not a de Polignac number, because 138746973963 - 2¹⁰ = 138746972939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138746973894 and 138746973903.

It is not an unprimeable number, because it can be changed into a prime (138746973943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1778807320 + ... + 1778807397.

It is an arithmetic number, because the mean of its divisors is an integer number (24903303026).

Almost surely, 2^138746973963 is an apocalyptic number.

138746973963 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

138746973963 is a deficient number, since it is larger than the sum of its proper divisors (60479450245).

138746973963 is a wasteful number, since it uses less digits than its factorization.

138746973963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3557614733.

The product of its digits is 123451776, while the sum is 66.

The spelling of 138746973963 in words is "one hundred thirty-eight billion, seven hundred forty-six million, nine hundred seventy-three thousand, nine hundred sixty-three".