191132490 has 16 divisors (see below), whose sum is σ = 458718048. Its totient is φ = 50968656.

The previous prime is 191132477. The next prime is 191132519. The reversal of 191132490 is 94231191.

191132490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 6371083 = 191132490 / (1 + 9 + 1 + 1 + 3 + 2 + 4 + 9 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3185512 + ... + 3185571.

It is an arithmetic number, because the mean of its divisors is an integer number (28669878).

Almost surely, 2^191132490 is an apocalyptic number.

191132490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

191132490 is an abundant number, since it is smaller than the sum of its proper divisors (267585558).

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

191132490 is a wasteful number, since it uses less digits than its factorization.

191132490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6371093.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 191132490 is about 13825.0674501067. The cubic root of 191132490 is about 576.0296510103.

The spelling of 191132490 in words is "one hundred ninety-one million, one hundred thirty-two thousand, four hundred ninety".