195487851 has 16 divisors (see below), whose sum is σ = 282592800. Its totient is φ = 119489280.

The previous prime is 195487841. The next prime is 195487861. The reversal of 195487851 is 158784591.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (195487841) and next prime (195487861).

It is not a de Polignac number, because 195487851 - 2⁷ = 195487723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195487851.

It is not an unprimeable number, because it can be changed into a prime (195487841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11010 + ... + 22631.

It is an arithmetic number, because the mean of its divisors is an integer number (17662050).

Almost surely, 2^195487851 is an apocalyptic number.

195487851 is a deficient number, since it is larger than the sum of its proper divisors (87104949).

195487851 is a wasteful number, since it uses less digits than its factorization.

195487851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33806.

The product of its digits is 403200, while the sum is 48.

The square root of 195487851 is about 13981.6970000068. The cubic root of 195487851 is about 580.3721858102.

The spelling of 195487851 in words is "one hundred ninety-five million, four hundred eighty-seven thousand, eight hundred fifty-one".