1191490533 has 8 divisors (see below), whose sum is σ = 1765171200. Its totient is φ = 794327004.

The previous prime is 1191490529. The next prime is 1191490571. The reversal of 1191490533 is 3350941911.

1191490533 is a `hidden beast` number, since 119 + 1 + 4 + 9 + 0 + 533 = 666.

It is not a de Polignac number, because 1191490533 - 2² = 1191490529 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191490583) 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, 22064613 + ... + 22064666.

It is an arithmetic number, because the mean of its divisors is an integer number (220646400).

Almost surely, 2^1191490533 is an apocalyptic number.

It is an amenable number.

1191490533 is a deficient number, since it is larger than the sum of its proper divisors (573680667).

1191490533 is an equidigital number, since it uses as much as digits as its factorization.

1191490533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44129288 (or 44129282 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 1191490533 is about 34517.9740570040. The cubic root of 1191490533 is about 1060.1407588678.

The spelling of 1191490533 in words is "one billion, one hundred ninety-one million, four hundred ninety thousand, five hundred thirty-three".