1123191148 has 12 divisors (see below), whose sum is σ = 2007405792. Its totient is φ = 549646640.

The previous prime is 1123191143. The next prime is 1123191161. The reversal of 1123191148 is 8411913211.

It is not an unprimeable number, because it can be changed into a prime (1123191143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2987023 + ... + 2987398.

It is an arithmetic number, because the mean of its divisors is an integer number (167283816).

Almost surely, 2^1123191148 is an apocalyptic number.

It is an amenable number.

1123191148 is a deficient number, since it is larger than the sum of its proper divisors (884214644).

1123191148 is a wasteful number, since it uses less digits than its factorization.

1123191148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5974472 (or 5974470 counting only the distinct ones).

The product of its digits is 1728, while the sum is 31.

The square root of 1123191148 is about 33514.0440412672. The cubic root of 1123191148 is about 1039.4841956510.

The spelling of 1123191148 in words is "one billion, one hundred twenty-three million, one hundred ninety-one thousand, one hundred forty-eight".