194946481 has 4 divisors (see below), whose sum is σ = 195213172. Its totient is φ = 194679792.

The previous prime is 194946473. The next prime is 194946509. The reversal of 194946481 is 184649491.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 159138225 + 35808256 = 12615^2 + 5984^2 .

It is a cyclic number.

It is not a de Polignac number, because 194946481 - 2³ = 194946473 is a prime.

It is a super-2 number, since 2×194946481² = 76008260908566722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194946421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132246 + ... + 133711.

It is an arithmetic number, because the mean of its divisors is an integer number (48803293).

Almost surely, 2^194946481 is an apocalyptic number.

It is an amenable number.

194946481 is a deficient number, since it is larger than the sum of its proper divisors (266691).

194946481 is an equidigital number, since it uses as much as digits as its factorization.

194946481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266690.

The product of its digits is 248832, while the sum is 46.

The square root of 194946481 is about 13962.3236246694. The cubic root of 194946481 is about 579.8359434930.

The spelling of 194946481 in words is "one hundred ninety-four million, nine hundred forty-six thousand, four hundred eighty-one".