195757481 has 2 divisors, whose sum is σ = 195757482. Its totient is φ = 195757480.

The previous prime is 195757469. The next prime is 195757489. The reversal of 195757481 is 184757591.

195757481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105678400 + 90079081 = 10280^2 + 9491^2 .

It is a cyclic number.

It is not a de Polignac number, because 195757481 - 2¹⁸ = 195495337 is a prime.

It is a super-2 number, since 2×195757481² = 76641982734930722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (195757489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97878740 + 97878741.

It is an arithmetic number, because the mean of its divisors is an integer number (97878741).

Almost surely, 2^195757481 is an apocalyptic number.

It is an amenable number.

195757481 is a deficient number, since it is larger than the sum of its proper divisors (1).

195757481 is an equidigital number, since it uses as much as digits as its factorization.

195757481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352800, while the sum is 47.

The square root of 195757481 is about 13991.3359262080. The cubic root of 195757481 is about 580.6388926866.

The spelling of 195757481 in words is "one hundred ninety-five million, seven hundred fifty-seven thousand, four hundred eighty-one".