138651702 has 64 divisors (see below), whose sum is σ = 335301120. Its totient is φ = 37338624.

The previous prime is 138651661. The next prime is 138651707. The reversal of 138651702 is 207156831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138651707) 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 31 ways as a sum of consecutive naturals, for example, 233518 + ... + 234110.

It is an arithmetic number, because the mean of its divisors is an integer number (5239080).

Almost surely, 2^138651702 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138651702, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167650560).

138651702 is an abundant number, since it is smaller than the sum of its proper divisors (196649418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138651702 is a wasteful number, since it uses less digits than its factorization.

138651702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 138651702 is about 11775.0457323953. The cubic root of 138651702 is about 517.5771184285.

The spelling of 138651702 in words is "one hundred thirty-eight million, six hundred fifty-one thousand, seven hundred two".