191840153 has 8 divisors (see below), whose sum is σ = 197225472. Its totient is φ = 186465456.

The previous prime is 191840147. The next prime is 191840177. The reversal of 191840153 is 351048191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 191840153 - 2⁴ = 191840137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191830153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46376 + ... + 50342.

It is an arithmetic number, because the mean of its divisors is an integer number (24653184).

Almost surely, 2^191840153 is an apocalyptic number.

It is an amenable number.

191840153 is a deficient number, since it is larger than the sum of its proper divisors (5385319).

191840153 is a wasteful number, since it uses less digits than its factorization.

191840153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5311.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 191840153 is about 13850.6372777573. The cubic root of 191840153 is about 576.7396869604.

The spelling of 191840153 in words is "one hundred ninety-one million, eight hundred forty thousand, one hundred fifty-three".