138857203 has 2 divisors, whose sum is σ = 138857204. Its totient is φ = 138857202.

The previous prime is 138857197. The next prime is 138857333. The reversal of 138857203 is 302758831.

138857203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138857203 - 2¹⁷ = 138726131 is a prime.

It is not a weakly prime, because it can be changed into another prime (138857603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69428601 + 69428602.

It is an arithmetic number, because the mean of its divisors is an integer number (69428602).

Almost surely, 2^138857203 is an apocalyptic number.

138857203 is a deficient number, since it is larger than the sum of its proper divisors (1).

138857203 is an equidigital number, since it uses as much as digits as its factorization.

138857203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 138857203 is about 11783.7686246803. The cubic root of 138857203 is about 517.8326991608.

The spelling of 138857203 in words is "one hundred thirty-eight million, eight hundred fifty-seven thousand, two hundred three".