193989095 has 8 divisors (see below), whose sum is σ = 234462480. Its totient is φ = 154074240.

The previous prime is 193989073. The next prime is 193989121. The reversal of 193989095 is 590989391.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 193989095 - 2²² = 189794791 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138866 + ... + 140255.

It is an arithmetic number, because the mean of its divisors is an integer number (29307810).

Almost surely, 2^193989095 is an apocalyptic number.

193989095 is a deficient number, since it is larger than the sum of its proper divisors (40473385).

193989095 is a wasteful number, since it uses less digits than its factorization.

193989095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279265.

The product of its (nonzero) digits is 787320, while the sum is 53.

The square root of 193989095 is about 13927.9968049968. The cubic root of 193989095 is about 578.8851901623.

The spelling of 193989095 in words is "one hundred ninety-three million, nine hundred eighty-nine thousand, ninety-five".