195383389 has 4 divisors (see below), whose sum is σ = 197317980. Its totient is φ = 193448800.

The previous prime is 195383381. The next prime is 195383393. The reversal of 195383389 is 983383591.

195383389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 983383591 = 29 ⋅33909779.

It can be written as a sum of positive squares in 2 ways, for example, as 153884025 + 41499364 = 12405^2 + 6442^2 .

It is a cyclic number.

It is not a de Polignac number, because 195383389 - 2³ = 195383381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195383381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 967144 + ... + 967345.

It is an arithmetic number, because the mean of its divisors is an integer number (49329495).

Almost surely, 2^195383389 is an apocalyptic number.

It is an amenable number.

195383389 is a deficient number, since it is larger than the sum of its proper divisors (1934591).

195383389 is a wasteful number, since it uses less digits than its factorization.

195383389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934590.

The product of its digits is 699840, while the sum is 49.

The square root of 195383389 is about 13977.9608312515. The cubic root of 195383389 is about 580.2687903969.

The spelling of 195383389 in words is "one hundred ninety-five million, three hundred eighty-three thousand, three hundred eighty-nine".