138768093 has 32 divisors (see below), whose sum is σ = 223585920. Its totient is φ = 84706560.

The previous prime is 138768079. The next prime is 138768101. The reversal of 138768093 is 390867831.

It is a happy number.

It is not a de Polignac number, because 138768093 - 2⁶ = 138768029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138768053) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12898 + ... + 21068.

It is an arithmetic number, because the mean of its divisors is an integer number (6987060).

Almost surely, 2^138768093 is an apocalyptic number.

It is an amenable number.

138768093 is a deficient number, since it is larger than the sum of its proper divisors (84817827).

138768093 is a wasteful number, since it uses less digits than its factorization.

138768093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8234 (or 8228 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 138768093 is about 11779.9869694325. The cubic root of 138768093 is about 517.7219044135.

The spelling of 138768093 in words is "one hundred thirty-eight million, seven hundred sixty-eight thousand, ninety-three".