194893761 has 4 divisors (see below), whose sum is σ = 259858352. Its totient is φ = 129929172.

The previous prime is 194893757. The next prime is 194893799. The reversal of 194893761 is 167398491.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 194893761 - 2² = 194893757 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 194893761.

It is not an unprimeable number, because it can be changed into a prime (194893261) 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 in 3 ways as a sum of consecutive naturals, for example, 32482291 + ... + 32482296.

It is an arithmetic number, because the mean of its divisors is an integer number (64964588).

Almost surely, 2^194893761 is an apocalyptic number.

It is an amenable number.

194893761 is a deficient number, since it is larger than the sum of its proper divisors (64964591).

194893761 is an equidigital number, since it uses as much as digits as its factorization.

194893761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64964590.

The product of its digits is 326592, while the sum is 48.

The square root of 194893761 is about 13960.4355591077. The cubic root of 194893761 is about 579.7836698180.

The spelling of 194893761 in words is "one hundred ninety-four million, eight hundred ninety-three thousand, seven hundred sixty-one".