191352144 has 20 divisors (see below), whose sum is σ = 494326496. Its totient is φ = 63784032.

The previous prime is 191352137. The next prime is 191352149. The reversal of 191352144 is 441253191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191352149) 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, 1993204 + ... + 1993299.

Almost surely, 2^191352144 is an apocalyptic number.

It is an amenable number.

191352144 is an abundant number, since it is smaller than the sum of its proper divisors (302974352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191352144 is a wasteful number, since it uses less digits than its factorization.

191352144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3986514 (or 3986508 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 191352144 is about 13833.0092170865. The cubic root of 191352144 is about 576.2502288557.

The spelling of 191352144 in words is "one hundred ninety-one million, three hundred fifty-two thousand, one hundred forty-four".