194937962057 has 2 divisors, whose sum is σ = 194937962058. Its totient is φ = 194937962056.

The previous prime is 194937962027. The next prime is 194937962059. The reversal of 194937962057 is 750269739491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148567077136 + 46370884921 = 385444^2 + 215339^2 .

It is a cyclic number.

It is not a de Polignac number, because 194937962057 - 2¹² = 194937957961 is a prime.

Together with 194937962059, 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 (194937962059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97468981028 + 97468981029.

It is an arithmetic number, because the mean of its divisors is an integer number (97468981029).

Almost surely, 2^194937962057 is an apocalyptic number.

It is an amenable number.

194937962057 is a deficient number, since it is larger than the sum of its proper divisors (1).

194937962057 is an equidigital number, since it uses as much as digits as its factorization.

194937962057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25719120, while the sum is 62.

The spelling of 194937962057 in words is "one hundred ninety-four billion, nine hundred thirty-seven million, nine hundred sixty-two thousand, fifty-seven".