191369151 has 6 divisors (see below), whose sum is σ = 276422120. Its totient is φ = 127579428.

The previous prime is 191369111. The next prime is 191369161. The reversal of 191369151 is 151963191.

It is a happy number.

It is not a de Polignac number, because 191369151 - 2⁷ = 191369023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191369111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10631611 + ... + 10631628.

Almost surely, 2^191369151 is an apocalyptic number.

191369151 is a deficient number, since it is larger than the sum of its proper divisors (85052969).

191369151 is a wasteful number, since it uses less digits than its factorization.

191369151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21263245 (or 21263242 counting only the distinct ones).

The product of its digits is 7290, while the sum is 36.

The square root of 191369151 is about 13833.6239286747. The cubic root of 191369151 is about 576.2673003434.

The spelling of 191369151 in words is "one hundred ninety-one million, three hundred sixty-nine thousand, one hundred fifty-one".