194290058789 has 2 divisors, whose sum is σ = 194290058790. Its totient is φ = 194290058788.

The previous prime is 194290058783. The next prime is 194290058821. The reversal of 194290058789 is 987850092491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140806558564 + 53483500225 = 375242^2 + 231265^2 .

It is a cyclic number.

It is not a de Polignac number, because 194290058789 - 2³² = 189995091493 is a prime.

It is a super-2 number, since 2×194290058789² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194290058783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97145029394 + 97145029395.

It is an arithmetic number, because the mean of its divisors is an integer number (97145029395).

Almost surely, 2^194290058789 is an apocalyptic number.

It is an amenable number.

194290058789 is a deficient number, since it is larger than the sum of its proper divisors (1).

194290058789 is an equidigital number, since it uses as much as digits as its factorization.

194290058789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13063680, while the sum is 62.

The spelling of 194290058789 in words is "one hundred ninety-four billion, two hundred ninety million, fifty-eight thousand, seven hundred eighty-nine".