194800729 has 2 divisors, whose sum is σ = 194800730. Its totient is φ = 194800728.

The previous prime is 194800703. The next prime is 194800747. The reversal of 194800729 is 927008491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150111504 + 44689225 = 12252^2 + 6685^2 .

It is a cyclic number.

It is not a de Polignac number, because 194800729 - 2¹⁵ = 194767961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 194800691 and 194800700.

It is not a weakly prime, because it can be changed into another prime (194800789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97400364 + 97400365.

It is an arithmetic number, because the mean of its divisors is an integer number (97400365).

Almost surely, 2^194800729 is an apocalyptic number.

It is an amenable number.

194800729 is a deficient number, since it is larger than the sum of its proper divisors (1).

194800729 is an equidigital number, since it uses as much as digits as its factorization.

194800729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 194800729 is about 13957.1031736532. The cubic root of 194800729 is about 579.6914024226.

The spelling of 194800729 in words is "one hundred ninety-four million, eight hundred thousand, seven hundred twenty-nine".