194149231 has 4 divisors (see below), whose sum is σ = 205569792. Its totient is φ = 182728672.

The previous prime is 194149217. The next prime is 194149273. The reversal of 194149231 is 132941491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 194149231 - 2⁵ = 194149199 is a prime.

It is a super-2 number, since 2×194149231² = 75387847795782722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194141231) 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, 5710255 + ... + 5710288.

It is an arithmetic number, because the mean of its divisors is an integer number (51392448).

Almost surely, 2^194149231 is an apocalyptic number.

194149231 is a deficient number, since it is larger than the sum of its proper divisors (11420561).

194149231 is a wasteful number, since it uses less digits than its factorization.

194149231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11420560.

The product of its digits is 7776, while the sum is 34.

The square root of 194149231 is about 13933.7443280692. The cubic root of 194149231 is about 579.0444342730.

The spelling of 194149231 in words is "one hundred ninety-four million, one hundred forty-nine thousand, two hundred thirty-one".