1191079628 has 6 divisors (see below), whose sum is σ = 2084389356. Its totient is φ = 595539812.

The previous prime is 1191079601. The next prime is 1191079667. The reversal of 1191079628 is 8269701911.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148884950 + ... + 148884957.

It is an arithmetic number, because the mean of its divisors is an integer number (347398226).

Almost surely, 2^1191079628 is an apocalyptic number.

It is an amenable number.

1191079628 is a deficient number, since it is larger than the sum of its proper divisors (893309728).

1191079628 is a wasteful number, since it uses less digits than its factorization.

1191079628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297769911 (or 297769909 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 44.

The square root of 1191079628 is about 34512.0214997615. The cubic root of 1191079628 is about 1060.0188758950.

The spelling of 1191079628 in words is "one billion, one hundred ninety-one million, seventy-nine thousand, six hundred twenty-eight".