1172091628 has 12 divisors (see below), whose sum is σ = 2054091312. Its totient is φ = 585208400.

The previous prime is 1172091623. The next prime is 1172091629. The reversal of 1172091628 is 8261902711.

It is not an unprimeable number, because it can be changed into a prime (1172091623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206200 + ... + 211807.

It is an arithmetic number, because the mean of its divisors is an integer number (171174276).

Almost surely, 2^1172091628 is an apocalyptic number.

It is an amenable number.

1172091628 is a deficient number, since it is larger than the sum of its proper divisors (881999684).

1172091628 is a wasteful number, since it uses less digits than its factorization.

1172091628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418712 (or 418710 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 1172091628 is about 34235.8237523212. The cubic root of 1172091628 is about 1054.3557915824.

The spelling of 1172091628 in words is "one billion, one hundred seventy-two million, ninety-one thousand, six hundred twenty-eight".