138763311 has 16 divisors (see below), whose sum is σ = 190417920. Its totient is φ = 89830080.

The previous prime is 138763309. The next prime is 138763337. The reversal of 138763311 is 113367831.

It is not a de Polignac number, because 138763311 - 2¹ = 138763309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138763711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24900 + ... + 29958.

It is an arithmetic number, because the mean of its divisors is an integer number (11901120).

Almost surely, 2^138763311 is an apocalyptic number.

138763311 is a deficient number, since it is larger than the sum of its proper divisors (51654609).

138763311 is a wasteful number, since it uses less digits than its factorization.

138763311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5326.

The product of its digits is 9072, while the sum is 33.

The square root of 138763311 is about 11779.7839963218. The cubic root of 138763311 is about 517.7159573822.

The spelling of 138763311 in words is "one hundred thirty-eight million, seven hundred sixty-three thousand, three hundred eleven".