195061663 has 2 divisors, whose sum is σ = 195061664. Its totient is φ = 195061662.

The previous prime is 195061561. The next prime is 195061673. The reversal of 195061663 is 366160591.

It is a strong prime.

It is an emirp because it is prime and its reverse (366160591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195061663 - 2¹³ = 195053471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195061673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97530831 + 97530832.

It is an arithmetic number, because the mean of its divisors is an integer number (97530832).

Almost surely, 2^195061663 is an apocalyptic number.

195061663 is a deficient number, since it is larger than the sum of its proper divisors (1).

195061663 is an equidigital number, since it uses as much as digits as its factorization.

195061663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 195061663 is about 13966.4477588254. The cubic root of 195061663 is about 579.9501175887.

The spelling of 195061663 in words is "one hundred ninety-five million, sixty-one thousand, six hundred sixty-three".