138258001 has 4 divisors (see below), whose sum is σ = 158009152. Its totient is φ = 118506852.

The previous prime is 138257953. The next prime is 138258013. The reversal of 138258001 is 100852831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 138258001 - 2¹⁵ = 138225233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138258031) 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 3 ways as a sum of consecutive naturals, for example, 9875565 + ... + 9875578.

It is an arithmetic number, because the mean of its divisors is an integer number (39502288).

Almost surely, 2^138258001 is an apocalyptic number.

It is an amenable number.

138258001 is a deficient number, since it is larger than the sum of its proper divisors (19751151).

138258001 is an equidigital number, since it uses as much as digits as its factorization.

138258001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19751150.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 138258001 is about 11758.3162485111. The cubic root of 138258001 is about 517.0867679084.

The spelling of 138258001 in words is "one hundred thirty-eight million, two hundred fifty-eight thousand, one".