194948137 has 2 divisors, whose sum is σ = 194948138. Its totient is φ = 194948136.

The previous prime is 194948101. The next prime is 194948147. The reversal of 194948137 is 731849491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174345616 + 20602521 = 13204^2 + 4539^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194948137 is a prime.

It is a super-2 number, since 2×194948137² = 76009552239541538, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (194948147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97474068 + 97474069.

It is an arithmetic number, because the mean of its divisors is an integer number (97474069).

Almost surely, 2^194948137 is an apocalyptic number.

It is an amenable number.

194948137 is a deficient number, since it is larger than the sum of its proper divisors (1).

194948137 is an equidigital number, since it uses as much as digits as its factorization.

194948137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 46.

The square root of 194948137 is about 13962.3829269935. The cubic root of 194948137 is about 579.8375853207.

It can be divided in two parts, 1949 and 48137, that added together give a triangular number (50086 = T₃₁₆).

The spelling of 194948137 in words is "one hundred ninety-four million, nine hundred forty-eight thousand, one hundred thirty-seven".