195983251 has 8 divisors (see below), whose sum is σ = 198471600. Its totient is φ = 193501440.

The previous prime is 195983231. The next prime is 195983273. The reversal of 195983251 is 152389591.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 195983251 - 2⁵ = 195983219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 195983198 and 195983207.

It is not an unprimeable number, because it can be changed into a prime (195983231) 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, 89611 + ... + 91771.

It is an arithmetic number, because the mean of its divisors is an integer number (24808950).

Almost surely, 2^195983251 is an apocalyptic number.

195983251 is a deficient number, since it is larger than the sum of its proper divisors (2488349).

195983251 is a wasteful number, since it uses less digits than its factorization.

195983251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3269.

The product of its digits is 97200, while the sum is 43.

The square root of 195983251 is about 13999.4018086488. The cubic root of 195983251 is about 580.8620267367.

The spelling of 195983251 in words is "one hundred ninety-five million, nine hundred eighty-three thousand, two hundred fifty-one".