1149163191 has 24 divisors (see below), whose sum is σ = 1889536896. Its totient is φ = 666180240.

The previous prime is 1149163189. The next prime is 1149163243. The reversal of 1149163191 is 1913619411.

1149163191 is a `hidden beast` number, since 1 + 14 + 9 + 1 + 631 + 9 + 1 = 666.

It is not a de Polignac number, because 1149163191 - 2¹ = 1149163189 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149163091) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 250065 + ... + 254618.

It is an arithmetic number, because the mean of its divisors is an integer number (78730704).

Almost surely, 2^1149163191 is an apocalyptic number.

1149163191 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1149163191 is a deficient number, since it is larger than the sum of its proper divisors (740373705).

1149163191 is a wasteful number, since it uses less digits than its factorization.

1149163191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504723 (or 504720 counting only the distinct ones).

The product of its digits is 5832, while the sum is 36.

The square root of 1149163191 is about 33899.3095947395. The cubic root of 1149163191 is about 1047.4353709155.

The spelling of 1149163191 in words is "one billion, one hundred forty-nine million, one hundred sixty-three thousand, one hundred ninety-one".