195346387 has 2 divisors, whose sum is σ = 195346388. Its totient is φ = 195346386.

The previous prime is 195346379. The next prime is 195346399. The reversal of 195346387 is 783643591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 195346387 - 2³ = 195346379 is a prime.

It is not a weakly prime, because it can be changed into another prime (195346357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97673193 + 97673194.

It is an arithmetic number, because the mean of its divisors is an integer number (97673194).

Almost surely, 2^195346387 is an apocalyptic number.

195346387 is a deficient number, since it is larger than the sum of its proper divisors (1).

195346387 is an equidigital number, since it uses as much as digits as its factorization.

195346387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 46.

The square root of 195346387 is about 13976.6371849598. The cubic root of 195346387 is about 580.2321573589.

It can be divided in two parts, 19534 and 6387, that added together give a square (25921 = 161²).

The spelling of 195346387 in words is "one hundred ninety-five million, three hundred forty-six thousand, three hundred eighty-seven".