194630401 has 9 divisors (see below), whose sum is σ = 226520451. Its totient is φ = 166742352.

The previous prime is 194630389. The next prime is 194630407. The reversal of 194630401 is 104036491.

The square root of 194630401 is 13951.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 142444225 + 52186176 = 11935^2 + 7224^2 .

It is not a de Polignac number, because 194630401 - 2¹³ = 194622209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 194630401.

It is not an unprimeable number, because it can be changed into a prime (194630407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 96661 + ... + 98653.

It is an arithmetic number, because the mean of its divisors is an integer number (25168939).

Almost surely, 2^194630401 is an apocalyptic number.

194630401 is the 13951-st square number.

194630401 is the 6976-th centered octagonal number.

It is an amenable number.

194630401 is a deficient number, since it is larger than the sum of its proper divisors (31890050).

194630401 is an frugal number, since it uses more digits than its factorization.

194630401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4000 (or 2000 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The cubic root of 194630401 is about 579.5223981459.

Adding to 194630401 its reverse (104036491), we get a palindrome (298666892).

The spelling of 194630401 in words is "one hundred ninety-four million, six hundred thirty thousand, four hundred one".