195213401639 has 16 divisors (see below), whose sum is σ = 203820079680. Its totient is φ = 186807264000.

The previous prime is 195213401609. The next prime is 195213401723. The reversal of 195213401639 is 936104312591.

195213401639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 195213401639 - 2³⁶ = 126493924903 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 195213401639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195213401609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 789149 + ... + 1006569.

It is an arithmetic number, because the mean of its divisors is an integer number (12738754980).

Almost surely, 2^195213401639 is an apocalyptic number.

195213401639 is a deficient number, since it is larger than the sum of its proper divisors (8606678041).

195213401639 is a wasteful number, since it uses less digits than its factorization.

195213401639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217882.

The product of its (nonzero) digits is 174960, while the sum is 44.

The spelling of 195213401639 in words is "one hundred ninety-five billion, two hundred thirteen million, four hundred one thousand, six hundred thirty-nine".