194266513 has 4 divisors (see below), whose sum is σ = 222018880. Its totient is φ = 166514148.

The previous prime is 194266493. The next prime is 194266519. The reversal of 194266513 is 315662491.

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, and also an emirpimes, since its reverse is a distinct semiprime: 315662491 = 31 ⋅10182661.

It is a cyclic number.

It is not a de Polignac number, because 194266513 - 2⁵ = 194266481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194266519) 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, 13876173 + ... + 13876186.

It is an arithmetic number, because the mean of its divisors is an integer number (55504720).

Almost surely, 2^194266513 is an apocalyptic number.

It is an amenable number.

194266513 is a deficient number, since it is larger than the sum of its proper divisors (27752367).

194266513 is an equidigital number, since it uses as much as digits as its factorization.

194266513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27752366.

The product of its digits is 38880, while the sum is 37.

The square root of 194266513 is about 13937.9522527522. The cubic root of 194266513 is about 579.1610075208.

The spelling of 194266513 in words is "one hundred ninety-four million, two hundred sixty-six thousand, five hundred thirteen".