195006457 has 4 divisors (see below), whose sum is σ = 196937316. Its totient is φ = 193075600.

The previous prime is 195006421. The next prime is 195006463. The reversal of 195006457 is 754600591.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79852096 + 115154361 = 8936^2 + 10731^2 .

It is a cyclic number.

It is not a de Polignac number, because 195006457 - 2¹¹ = 195004409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195006407) 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, 965278 + ... + 965479.

It is an arithmetic number, because the mean of its divisors is an integer number (49234329).

Almost surely, 2^195006457 is an apocalyptic number.

It is an amenable number.

195006457 is a deficient number, since it is larger than the sum of its proper divisors (1930859).

195006457 is a wasteful number, since it uses less digits than its factorization.

195006457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930858.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 195006457 is about 13964.4712395422. The cubic root of 195006457 is about 579.8954002810.

The spelling of 195006457 in words is "one hundred ninety-five million, six thousand, four hundred fifty-seven".