138788763 has 8 divisors (see below), whose sum is σ = 185130000. Its totient is φ = 92486688.

The previous prime is 138788759. The next prime is 138788777. The reversal of 138788763 is 367887831.

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

It is not a de Polignac number, because 138788763 - 2² = 138788759 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (138788723) 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, 168 + ... + 16661.

It is an arithmetic number, because the mean of its divisors is an integer number (23141250).

Almost surely, 2^138788763 is an apocalyptic number.

138788763 is a deficient number, since it is larger than the sum of its proper divisors (46341237).

138788763 is a wasteful number, since it uses less digits than its factorization.

138788763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19581.

The product of its digits is 1354752, while the sum is 51.

The square root of 138788763 is about 11780.8642722001. The cubic root of 138788763 is about 517.7476086424.

The spelling of 138788763 in words is "one hundred thirty-eight million, seven hundred eighty-eight thousand, seven hundred sixty-three".