138848738 has 16 divisors (see below), whose sum is σ = 240339840. Its totient is φ = 58928256.

The previous prime is 138848737. The next prime is 138848797. The reversal of 138848738 is 837848831.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (138848737) 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, 46703 + ... + 49586.

It is an arithmetic number, because the mean of its divisors is an integer number (15021240).

Almost surely, 2^138848738 is an apocalyptic number.

138848738 is a deficient number, since it is larger than the sum of its proper divisors (101491102).

138848738 is a wasteful number, since it uses less digits than its factorization.

138848738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96401.

The product of its digits is 1032192, while the sum is 50.

The square root of 138848738 is about 11783.4094386981. The cubic root of 138848738 is about 517.8221762572.

It can be divided in two parts, 13884 and 8738, that added together give a palindrome (22622).

The spelling of 138848738 in words is "one hundred thirty-eight million, eight hundred forty-eight thousand, seven hundred thirty-eight".