194495691 has 16 divisors (see below), whose sum is σ = 295704864. Its totient is φ = 112648704.

The previous prime is 194495689. The next prime is 194495699. The reversal of 194495691 is 196594491.

It is a happy number.

It is not a de Polignac number, because 194495691 - 2¹ = 194495689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 194495691.

It is not an unprimeable number, because it can be changed into a prime (194495699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146016 + ... + 147341.

It is an arithmetic number, because the mean of its divisors is an integer number (18481554).

Almost surely, 2^194495691 is an apocalyptic number.

194495691 is a deficient number, since it is larger than the sum of its proper divisors (101209173).

194495691 is a wasteful number, since it uses less digits than its factorization.

194495691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293390.

The product of its digits is 349920, while the sum is 48.

The square root of 194495691 is about 13946.1711949911. The cubic root of 194495691 is about 579.3886652179.

The spelling of 194495691 in words is "one hundred ninety-four million, four hundred ninety-five thousand, six hundred ninety-one".