193424491 has 4 divisors (see below), whose sum is σ = 208303312. Its totient is φ = 178545672.

The previous prime is 193424489. The next prime is 193424509. The reversal of 193424491 is 194424391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 194424391 = 7 ⋅27774913.

It is a cyclic number.

It is not a de Polignac number, because 193424491 - 2¹ = 193424489 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 193424491.

It is not an unprimeable number, because it can be changed into a prime (193424591) 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, 7439391 + ... + 7439416.

It is an arithmetic number, because the mean of its divisors is an integer number (52075828).

Almost surely, 2^193424491 is an apocalyptic number.

193424491 is a deficient number, since it is larger than the sum of its proper divisors (14878821).

193424491 is a wasteful number, since it uses less digits than its factorization.

193424491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14878820.

The product of its digits is 31104, while the sum is 37.

The square root of 193424491 is about 13907.7133634541. The cubic root of 193424491 is about 578.3230305607.

The spelling of 193424491 in words is "one hundred ninety-three million, four hundred twenty-four thousand, four hundred ninety-one".