138033145 has 16 divisors (see below), whose sum is σ = 170069760. Its totient is φ = 107512704.

The previous prime is 138033121. The next prime is 138033151. The reversal of 138033145 is 541330831.

It is a cyclic number.

It is not a de Polignac number, because 138033145 - 2⁹ = 138032633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26442 + ... + 31228.

It is an arithmetic number, because the mean of its divisors is an integer number (10629360).

Almost surely, 2^138033145 is an apocalyptic number.

It is an amenable number.

138033145 is a deficient number, since it is larger than the sum of its proper divisors (32036615).

138033145 is an equidigital number, since it uses as much as digits as its factorization.

138033145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4944.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 138033145 is about 11748.7507846579. The cubic root of 138033145 is about 516.8062943241.

Adding to 138033145 its reverse (541330831), we get a palindrome (679363976).

The spelling of 138033145 in words is "one hundred thirty-eight million, thirty-three thousand, one hundred forty-five".