1128566197 has 8 divisors (see below), whose sum is σ = 1238718240. Its totient is φ = 1019673360.

The previous prime is 1128566177. The next prime is 1128566227. The reversal of 1128566197 is 7916658211.

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 1128566197 - 2¹¹ = 1128564149 is a prime.

It is a super-2 number, since 2×1128566197² = 2547323322022085618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128566137) 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, 312922 + ... + 316507.

It is an arithmetic number, because the mean of its divisors is an integer number (154839780).

Almost surely, 2^1128566197 is an apocalyptic number.

It is an amenable number.

1128566197 is a deficient number, since it is larger than the sum of its proper divisors (110152043).

1128566197 is a wasteful number, since it uses less digits than its factorization.

1128566197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629603.

The product of its digits is 181440, while the sum is 46.

The square root of 1128566197 is about 33594.1393251859. The cubic root of 1128566197 is about 1041.1397136355.

The spelling of 1128566197 in words is "one billion, one hundred twenty-eight million, five hundred sixty-six thousand, one hundred ninety-seven".