194948941931 has 2 divisors, whose sum is σ = 194948941932. Its totient is φ = 194948941930.

The previous prime is 194948941921. The next prime is 194948941933. The reversal of 194948941931 is 139149849491.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194948941931 is a prime.

It is a super-2 number, since 2×194948941931² (a number of 23 digits) contains 22 as substring.

Together with 194948941933, 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 (194948941933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97474470965 + 97474470966.

It is an arithmetic number, because the mean of its divisors is an integer number (97474470966).

Almost surely, 2^194948941931 is an apocalyptic number.

194948941931 is a deficient number, since it is larger than the sum of its proper divisors (1).

194948941931 is an equidigital number, since it uses as much as digits as its factorization.

194948941931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10077696, while the sum is 62.

The spelling of 194948941931 in words is "one hundred ninety-four billion, nine hundred forty-eight million, nine hundred forty-one thousand, nine hundred thirty-one".