191052530 has 8 divisors (see below), whose sum is σ = 343894572. Its totient is φ = 76421008.

The previous prime is 191052529. The next prime is 191052539. The reversal of 191052530 is 35250191.

It can be written as a sum of positive squares in 2 ways, for example, as 185858689 + 5193841 = 13633^2 + 2279^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 191052530.

It is not an unprimeable number, because it can be changed into a prime (191052539) 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, 9552617 + ... + 9552636.

Almost surely, 2^191052530 is an apocalyptic number.

191052530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

191052530 is a deficient number, since it is larger than the sum of its proper divisors (152842042).

191052530 is a wasteful number, since it uses less digits than its factorization.

191052530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19105260.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 191052530 is about 13822.1752991344. The cubic root of 191052530 is about 575.9493127497.

The spelling of 191052530 in words is "one hundred ninety-one million, fifty-two thousand, five hundred thirty".