138601747 has 8 divisors (see below), whose sum is σ = 140454000. Its totient is φ = 136756224.

The previous prime is 138601717. The next prime is 138601777. The reversal of 138601747 is 747106831.

It is an interprime number because it is at equal distance from previous prime (138601717) and next prime (138601777).

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 138601747 - 2¹⁵ = 138568979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138601717) 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, 50004 + ... + 52702.

It is an arithmetic number, because the mean of its divisors is an integer number (17556750).

Almost surely, 2^138601747 is an apocalyptic number.

138601747 is a deficient number, since it is larger than the sum of its proper divisors (1852253).

138601747 is an equidigital number, since it uses as much as digits as its factorization.

138601747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3365.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 138601747 is about 11772.9243181123. The cubic root of 138601747 is about 517.5149514533.

The spelling of 138601747 in words is "one hundred thirty-eight million, six hundred one thousand, seven hundred forty-seven".