138368077 has 8 divisors (see below), whose sum is σ = 143776800. Its totient is φ = 133001904.

The previous prime is 138368059. The next prime is 138368099. The reversal of 138368077 is 770863831.

138368077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 138368077 - 2¹⁹ = 137843789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138368057) 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, 3927 + ... + 17092.

It is an arithmetic number, because the mean of its divisors is an integer number (17972100).

Almost surely, 2^138368077 is an apocalyptic number.

It is an amenable number.

138368077 is a deficient number, since it is larger than the sum of its proper divisors (5408723).

138368077 is a wasteful number, since it uses less digits than its factorization.

138368077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21275.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 138368077 is about 11762.9960894323. The cubic root of 138368077 is about 517.2239600751.

The spelling of 138368077 in words is "one hundred thirty-eight million, three hundred sixty-eight thousand, seventy-seven".