195703139 has 2 divisors, whose sum is σ = 195703140. Its totient is φ = 195703138.

The previous prime is 195703129. The next prime is 195703147. The reversal of 195703139 is 931307591.

195703139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 195703139 - 2¹² = 195699043 is a prime.

It is a super-2 number, since 2×195703139² = 76599437228906642, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (195703129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97851569 + 97851570.

It is an arithmetic number, because the mean of its divisors is an integer number (97851570).

Almost surely, 2^195703139 is an apocalyptic number.

195703139 is a deficient number, since it is larger than the sum of its proper divisors (1).

195703139 is an equidigital number, since it uses as much as digits as its factorization.

195703139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25515, while the sum is 38.

The square root of 195703139 is about 13989.3938038787. The cubic root of 195703139 is about 580.5851595356.

The spelling of 195703139 in words is "one hundred ninety-five million, seven hundred three thousand, one hundred thirty-nine".