194698913 has 4 divisors (see below), whose sum is σ = 195221268. Its totient is φ = 194176560.

The previous prime is 194698901. The next prime is 194698919. The reversal of 194698913 is 319896491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 319896491 = 1087 ⋅294293.

It can be written as a sum of positive squares in 2 ways, for example, as 37246609 + 157452304 = 6103^2 + 12548^2 .

It is a cyclic number.

It is not a de Polignac number, because 194698913 - 2⁶ = 194698849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194698919) 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, 260618 + ... + 261363.

It is an arithmetic number, because the mean of its divisors is an integer number (48805317).

Almost surely, 2^194698913 is an apocalyptic number.

It is an amenable number.

194698913 is a deficient number, since it is larger than the sum of its proper divisors (522355).

194698913 is an equidigital number, since it uses as much as digits as its factorization.

194698913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522354.

The product of its digits is 419904, while the sum is 50.

The square root of 194698913 is about 13953.4552351738. The cubic root of 194698913 is about 579.5903895464.

It can be divided in two parts, 19469 and 8913, that added together give a palindrome (28382).

The spelling of 194698913 in words is "one hundred ninety-four million, six hundred ninety-eight thousand, nine hundred thirteen".