138765363 has 8 divisors (see below), whose sum is σ = 201840576. Its totient is φ = 84100200.

The previous prime is 138765349. The next prime is 138765391. The reversal of 138765363 is 363567831.

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

It is not a de Polignac number, because 138765363 - 2⁶ = 138765299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138765313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2102473 + ... + 2102538.

It is an arithmetic number, because the mean of its divisors is an integer number (25230072).

Almost surely, 2^138765363 is an apocalyptic number.

138765363 is a deficient number, since it is larger than the sum of its proper divisors (63075213).

138765363 is a wasteful number, since it uses less digits than its factorization.

138765363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4205025.

The product of its digits is 272160, while the sum is 42.

The square root of 138765363 is about 11779.8710943711. The cubic root of 138765363 is about 517.7185093246.

It can be divided in two parts, 138765 and 363, that added together give a triangular number (139128 = T₅₂₇).

The spelling of 138765363 in words is "one hundred thirty-eight million, seven hundred sixty-five thousand, three hundred sixty-three".