138151645 has 16 divisors (see below), whose sum is σ = 168514560. Its totient is φ = 108710784.

The previous prime is 138151631. The next prime is 138151649. The reversal of 138151645 is 546151831.

It is a cyclic number.

It is not a de Polignac number, because 138151645 - 2⁵ = 138151613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138151645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138151649) 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, 144489 + ... + 145441.

It is an arithmetic number, because the mean of its divisors is an integer number (10532160).

Almost surely, 2^138151645 is an apocalyptic number.

It is an amenable number.

138151645 is a deficient number, since it is larger than the sum of its proper divisors (30362915).

138151645 is an equidigital number, since it uses as much as digits as its factorization.

138151645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404.

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

The square root of 138151645 is about 11753.7927921161. The cubic root of 138151645 is about 516.9541429421.

The spelling of 138151645 in words is "one hundred thirty-eight million, one hundred fifty-one thousand, six hundred forty-five".