1191268049 has 8 divisors (see below), whose sum is σ = 1244004480. Its totient is φ = 1138610176.

The previous prime is 1191268009. The next prime is 1191268051. The reversal of 1191268049 is 9408621911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1191268049 - 2¹⁶ = 1191202513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1191267997 and 1191268015.

It is not an unprimeable number, because it can be changed into a prime (1191268009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12497 + ... + 50385.

It is an arithmetic number, because the mean of its divisors is an integer number (155500560).

Almost surely, 2^1191268049 is an apocalyptic number.

It is an amenable number.

1191268049 is a deficient number, since it is larger than the sum of its proper divisors (52736431).

1191268049 is a wasteful number, since it uses less digits than its factorization.

1191268049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39279.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 1191268049 is about 34514.7511797492. The cubic root of 1191268049 is about 1060.0747689635.

The spelling of 1191268049 in words is "one billion, one hundred ninety-one million, two hundred sixty-eight thousand, forty-nine".