195154039 has 4 divisors (see below), whose sum is σ = 197827456. Its totient is φ = 192480624.

The previous prime is 195154013. The next prime is 195154087. The reversal of 195154039 is 930451591.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 930451591 = 23 ⋅40454417.

It is a cyclic number.

It is not a de Polignac number, because 195154039 - 2⁷ = 195153911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 195153989 and 195154007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195154439) 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, 1336599 + ... + 1336744.

It is an arithmetic number, because the mean of its divisors is an integer number (49456864).

Almost surely, 2^195154039 is an apocalyptic number.

195154039 is a deficient number, since it is larger than the sum of its proper divisors (2673417).

195154039 is an equidigital number, since it uses as much as digits as its factorization.

195154039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2673416.

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 195154039 is about 13969.7544359233. The cubic root of 195154039 is about 580.0416527756.

The spelling of 195154039 in words is "one hundred ninety-five million, one hundred fifty-four thousand, thirty-nine".