195151389 has 8 divisors (see below), whose sum is σ = 271515072. Its totient is φ = 124444320.

The previous prime is 195151373. The next prime is 195151391. The reversal of 195151389 is 983151591.

195151389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 195151389 - 2⁴ = 195151373 is a prime.

It is a super-3 number, since 3×195151389³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 195151389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195151189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1414072 + ... + 1414209.

It is an arithmetic number, because the mean of its divisors is an integer number (33939384).

Almost surely, 2^195151389 is an apocalyptic number.

It is an amenable number.

195151389 is a deficient number, since it is larger than the sum of its proper divisors (76363683).

195151389 is a wasteful number, since it uses less digits than its factorization.

195151389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2828307.

The product of its digits is 48600, while the sum is 42.

The square root of 195151389 is about 13969.6595878353. The cubic root of 195151389 is about 580.0390272985.

The spelling of 195151389 in words is "one hundred ninety-five million, one hundred fifty-one thousand, three hundred eighty-nine".