194838725157029 has 2 divisors, whose sum is σ = 194838725157030. Its totient is φ = 194838725157028.

The previous prime is 194838725157017. The next prime is 194838725157073. The reversal of 194838725157029 is 920751527838491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187602275452804 + 7236449704225 = 13696798^2 + 2690065^2 .

It is a cyclic number.

It is not a de Polignac number, because 194838725157029 - 2¹² = 194838725152933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194838725127029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97419362578514 + 97419362578515.

It is an arithmetic number, because the mean of its divisors is an integer number (97419362578515).

Almost surely, 2^{194838725157029} is an apocalyptic number.

It is an amenable number.

194838725157029 is a deficient number, since it is larger than the sum of its proper divisors (1).

194838725157029 is an equidigital number, since it uses as much as digits as its factorization.

194838725157029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 304819200, while the sum is 71.

The spelling of 194838725157029 in words is "one hundred ninety-four trillion, eight hundred thirty-eight billion, seven hundred twenty-five million, one hundred fifty-seven thousand, twenty-nine".