138154103 has 4 divisors (see below), whose sum is σ = 141093600. Its totient is φ = 135214608.

The previous prime is 138154069. The next prime is 138154117. The reversal of 138154103 is 301451831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301451831 = 1877 ⋅160603.

It is a cyclic number.

It is not a de Polignac number, because 138154103 - 2¹⁸ = 137891959 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 (138154153) 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, 1469678 + ... + 1469771.

It is an arithmetic number, because the mean of its divisors is an integer number (35273400).

Almost surely, 2^138154103 is an apocalyptic number.

138154103 is a deficient number, since it is larger than the sum of its proper divisors (2939497).

138154103 is an equidigital number, since it uses as much as digits as its factorization.

138154103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2939496.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 138154103 is about 11753.8973536440. The cubic root of 138154103 is about 516.9572088140.

The spelling of 138154103 in words is "one hundred thirty-eight million, one hundred fifty-four thousand, one hundred three".