195390455 has 16 divisors (see below), whose sum is σ = 253212960. Its totient is φ = 143883648.

The previous prime is 195390449. The next prime is 195390473. The reversal of 195390455 is 554093591.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 195390455 - 2⁸ = 195390199 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 20216 + ... + 28274.

It is an arithmetic number, because the mean of its divisors is an integer number (15825810).

Almost surely, 2^195390455 is an apocalyptic number.

195390455 is a deficient number, since it is larger than the sum of its proper divisors (57822505).

195390455 is a wasteful number, since it uses less digits than its factorization.

195390455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8450.

The product of its (nonzero) digits is 121500, while the sum is 41.

The square root of 195390455 is about 13978.2135840028. The cubic root of 195390455 is about 580.2757854130.

The spelling of 195390455 in words is "one hundred ninety-five million, three hundred ninety thousand, four hundred fifty-five".