191134949 has 2 divisors, whose sum is σ = 191134950. Its totient is φ = 191134948.

The previous prime is 191134943. The next prime is 191134963. The reversal of 191134949 is 949431191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146845924 + 44289025 = 12118^2 + 6655^2 .

It is a cyclic number.

It is not a de Polignac number, because 191134949 - 2⁸ = 191134693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191134943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95567474 + 95567475.

It is an arithmetic number, because the mean of its divisors is an integer number (95567475).

Almost surely, 2^191134949 is an apocalyptic number.

It is an amenable number.

191134949 is a deficient number, since it is larger than the sum of its proper divisors (1).

191134949 is an equidigital number, since it uses as much as digits as its factorization.

191134949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 41.

The square root of 191134949 is about 13825.1563824790. The cubic root of 191134949 is about 576.0321212877.

The spelling of 191134949 in words is "one hundred ninety-one million, one hundred thirty-four thousand, nine hundred forty-nine".