191513 has 8 divisors (see below), whose sum is σ = 221760. Its totient is φ = 162000.

The previous prime is 191509. The next prime is 191519. The reversal of 191513 is 315191.

191513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 191513 - 2² = 191509 is a prime.

It is not an unprimeable number, because it can be changed into a prime (191519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638 + ... + 888.

It is an arithmetic number, because the mean of its divisors is an integer number (27720).

2¹⁹¹⁵¹³ is an apocalyptic number.

It is an amenable number.

191513 is a deficient number, since it is larger than the sum of its proper divisors (30247).

191513 is a wasteful number, since it uses less digits than its factorization.

191513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367.

The product of its digits is 135, while the sum is 20.

The square root of 191513 is about 437.6219829945. The cubic root of 191513 is about 57.6411654354.

The spelling of 191513 in words is "one hundred ninety-one thousand, five hundred thirteen".