195400837 has 4 divisors (see below), whose sum is σ = 195520000. Its totient is φ = 195281676.

The previous prime is 195400823. The next prime is 195400853. The reversal of 195400837 is 738004591.

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: 738004591 = 293 ⋅2518787.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195400837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 195400796 and 195400805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195400817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57087 + ... + 60412.

It is an arithmetic number, because the mean of its divisors is an integer number (48880000).

Almost surely, 2^195400837 is an apocalyptic number.

It is an amenable number.

195400837 is a deficient number, since it is larger than the sum of its proper divisors (119163).

195400837 is a wasteful number, since it uses less digits than its factorization.

195400837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119162.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 195400837 is about 13978.5849426900. The cubic root of 195400837 is about 580.2860628112.

The spelling of 195400837 in words is "one hundred ninety-five million, four hundred thousand, eight hundred thirty-seven".