195857401 has 4 divisors (see below), whose sum is σ = 197687952. Its totient is φ = 194026852.

The previous prime is 195857383. The next prime is 195857407. The reversal of 195857401 is 104758591.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104758591 = 7 ⋅14965513.

It is a cyclic number.

It is not a de Polignac number, because 195857401 - 2¹⁵ = 195824633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195857407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 915115 + ... + 915328.

It is an arithmetic number, because the mean of its divisors is an integer number (49421988).

Almost surely, 2^195857401 is an apocalyptic number.

It is an amenable number.

195857401 is a deficient number, since it is larger than the sum of its proper divisors (1830551).

195857401 is a wasteful number, since it uses less digits than its factorization.

195857401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830550.

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 195857401 is about 13994.9062519189. The cubic root of 195857401 is about 580.7376672339.

The spelling of 195857401 in words is "one hundred ninety-five million, eight hundred fifty-seven thousand, four hundred one".