138164551 has 16 divisors (see below), whose sum is σ = 163952640. Its totient is φ = 113934240.

The previous prime is 138164501. The next prime is 138164557. The reversal of 138164551 is 155461831.

It is not a de Polignac number, because 138164551 - 2¹¹ = 138162503 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 (138164557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37065 + ... + 40621.

It is an arithmetic number, because the mean of its divisors is an integer number (10247040).

Almost surely, 2^138164551 is an apocalyptic number.

138164551 is a deficient number, since it is larger than the sum of its proper divisors (25788089).

138164551 is a wasteful number, since it uses less digits than its factorization.

138164551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3774.

The product of its digits is 14400, while the sum is 34.

The square root of 138164551 is about 11754.3417935672. The cubic root of 138164551 is about 516.9702402348.

The spelling of 138164551 in words is "one hundred thirty-eight million, one hundred sixty-four thousand, five hundred fifty-one".