191007049 has 2 divisors, whose sum is σ = 191007050. Its totient is φ = 191007048.

The previous prime is 191007007. The next prime is 191007199. The reversal of 191007049 is 940700191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185831424 + 5175625 = 13632^2 + 2275^2 .

It is a cyclic number.

It is not a de Polignac number, because 191007049 - 2¹⁵ = 190974281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 191007049.

It is not a weakly prime, because it can be changed into another prime (191007749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95503524 + 95503525.

It is an arithmetic number, because the mean of its divisors is an integer number (95503525).

Almost surely, 2^191007049 is an apocalyptic number.

It is an amenable number.

191007049 is a deficient number, since it is larger than the sum of its proper divisors (1).

191007049 is an equidigital number, since it uses as much as digits as its factorization.

191007049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 191007049 is about 13820.5299826020. The cubic root of 191007049 is about 575.9036065949.

The spelling of 191007049 in words is "one hundred ninety-one million, seven thousand, forty-nine".