191132901 has 6 divisors (see below), whose sum is σ = 276080870. Its totient is φ = 127421928.

The previous prime is 191132869. The next prime is 191132911. The reversal of 191132901 is 109231191.

It can be written as a sum of positive squares in only one way, i.e., 184932801 + 6200100 = 13599^2 + 2490^2 .

It is not a de Polignac number, because 191132901 - 2⁵ = 191132869 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191132911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10618486 + ... + 10618503.

Almost surely, 2^191132901 is an apocalyptic number.

It is an amenable number.

191132901 is a deficient number, since it is larger than the sum of its proper divisors (84947969).

191132901 is a wasteful number, since it uses less digits than its factorization.

191132901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21236995 (or 21236992 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The square root of 191132901 is about 13825.0823144023. The cubic root of 191132901 is about 576.0300638967.

The spelling of 191132901 in words is "one hundred ninety-one million, one hundred thirty-two thousand, nine hundred one".