195609487 has 2 divisors, whose sum is σ = 195609488. Its totient is φ = 195609486.

The previous prime is 195609461. The next prime is 195609499. The reversal of 195609487 is 784906591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 195609487 - 2¹¹ = 195607439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195609487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195609187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97804743 + 97804744.

It is an arithmetic number, because the mean of its divisors is an integer number (97804744).

Almost surely, 2^195609487 is an apocalyptic number.

195609487 is a deficient number, since it is larger than the sum of its proper divisors (1).

195609487 is an equidigital number, since it uses as much as digits as its factorization.

195609487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 195609487 is about 13986.0461532200. The cubic root of 195609487 is about 580.4925334674.

The spelling of 195609487 in words is "one hundred ninety-five million, six hundred nine thousand, four hundred eighty-seven".