194956961 has 2 divisors, whose sum is σ = 194956962. Its totient is φ = 194956960.

The previous prime is 194956933. The next prime is 194956963. The reversal of 194956961 is 169659491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188925025 + 6031936 = 13745^2 + 2456^2 .

It is a cyclic number.

It is not a de Polignac number, because 194956961 - 2²² = 190762657 is a prime.

Together with 194956963, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (194956963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97478480 + 97478481.

It is an arithmetic number, because the mean of its divisors is an integer number (97478481).

Almost surely, 2^194956961 is an apocalyptic number.

It is an amenable number.

194956961 is a deficient number, since it is larger than the sum of its proper divisors (1).

194956961 is an equidigital number, since it uses as much as digits as its factorization.

194956961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 524880, while the sum is 50.

The square root of 194956961 is about 13962.6989153244. The cubic root of 194956961 is about 579.8463336469.

The spelling of 194956961 in words is "one hundred ninety-four million, nine hundred fifty-six thousand, nine hundred sixty-one".