194864029 has 2 divisors, whose sum is σ = 194864030. Its totient is φ = 194864028.

The previous prime is 194863993. The next prime is 194864051. The reversal of 194864029 is 920468491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193488100 + 1375929 = 13910^2 + 1173^2 .

It is a cyclic number.

It is not a de Polignac number, because 194864029 - 2⁷ = 194863901 is a prime.

It is a super-2 number, since 2×194864029² = 75943979596225682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194864069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97432014 + 97432015.

It is an arithmetic number, because the mean of its divisors is an integer number (97432015).

Almost surely, 2^194864029 is an apocalyptic number.

It is an amenable number.

194864029 is a deficient number, since it is larger than the sum of its proper divisors (1).

194864029 is an equidigital number, since it uses as much as digits as its factorization.

194864029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 194864029 is about 13959.3706520029. The cubic root of 194864029 is about 579.7541853702.

The spelling of 194864029 in words is "one hundred ninety-four million, eight hundred sixty-four thousand, twenty-nine".