138453001 has 4 divisors (see below), whose sum is σ = 142195012. Its totient is φ = 134710992.

The previous prime is 138452959. The next prime is 138453059. The reversal of 138453001 is 100354831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100354831 = 5081 ⋅19751.

It can be written as a sum of positive squares in 2 ways, for example, as 49716601 + 88736400 = 7051^2 + 9420^2 .

It is a cyclic number.

It is not a de Polignac number, because 138453001 - 2¹¹ = 138450953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138453061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1870950 + ... + 1871023.

It is an arithmetic number, because the mean of its divisors is an integer number (35548753).

Almost surely, 2^138453001 is an apocalyptic number.

It is an amenable number.

138453001 is a deficient number, since it is larger than the sum of its proper divisors (3742011).

138453001 is an equidigital number, since it uses as much as digits as its factorization.

138453001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3742010.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 138453001 is about 11766.6053303406. The cubic root of 138453001 is about 517.3297545745.

The spelling of 138453001 in words is "one hundred thirty-eight million, four hundred fifty-three thousand, one".