195054749 has 2 divisors, whose sum is σ = 195054750. Its totient is φ = 195054748.

The previous prime is 195054733. The next prime is 195054763. The reversal of 195054749 is 947450591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116856100 + 78198649 = 10810^2 + 8843^2 .

It is a cyclic number.

It is not a de Polignac number, because 195054749 - 2⁴ = 195054733 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195054799) 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 as a sum of consecutive naturals, namely, 97527374 + 97527375.

It is an arithmetic number, because the mean of its divisors is an integer number (97527375).

Almost surely, 2^195054749 is an apocalyptic number.

It is an amenable number.

195054749 is a deficient number, since it is larger than the sum of its proper divisors (1).

195054749 is an equidigital number, since it uses as much as digits as its factorization.

195054749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 44.

The square root of 195054749 is about 13966.2002348527. The cubic root of 195054749 is about 579.9432653581.

The spelling of 195054749 in words is "one hundred ninety-five million, fifty-four thousand, seven hundred forty-nine".