1191056449 has 8 divisors (see below), whose sum is σ = 1355827392. Its totient is φ = 1035701040.

The previous prime is 1191056429. The next prime is 1191056467. The reversal of 1191056449 is 9446501911.

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

It is not a de Polignac number, because 1191056449 - 2⁵ = 1191056417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1191056429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2353614 + ... + 2354119.

It is an arithmetic number, because the mean of its divisors is an integer number (169478424).

Almost surely, 2^1191056449 is an apocalyptic number.

It is an amenable number.

1191056449 is a deficient number, since it is larger than the sum of its proper divisors (164770943).

1191056449 is a wasteful number, since it uses less digits than its factorization.

1191056449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4707767.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 1191056449 is about 34511.6856876044. The cubic root of 1191056449 is about 1060.0119996862.

The spelling of 1191056449 in words is "one billion, one hundred ninety-one million, fifty-six thousand, four hundred forty-nine".