138303705 has 8 divisors (see below), whose sum is σ = 221285952. Its totient is φ = 73761968.

The previous prime is 138303703. The next prime is 138303713. The reversal of 138303705 is 507303831.

138303705 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 138303705 - 2¹ = 138303703 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (138303703) 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, 4610109 + ... + 4610138.

It is an arithmetic number, because the mean of its divisors is an integer number (27660744).

Almost surely, 2^138303705 is an apocalyptic number.

138303705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138303705 is a deficient number, since it is larger than the sum of its proper divisors (82982247).

138303705 is an equidigital number, since it uses as much as digits as its factorization.

138303705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9220255.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 138303705 is about 11760.2595634620. The cubic root of 138303705 is about 517.1437394877.

The spelling of 138303705 in words is "one hundred thirty-eight million, three hundred three thousand, seven hundred five".