1185149133 has 36 divisors (see below), whose sum is σ = 2033778240. Its totient is φ = 662807376.

The previous prime is 1185149123. The next prime is 1185149143. The reversal of 1185149133 is 3319415811.

It is a happy number.

1185149133 is a `hidden beast` number, since 1 + 1 + 8 + 514 + 9 + 133 = 666.

It is an interprime number because it is at equal distance from previous prime (1185149123) and next prime (1185149143).

It is not a de Polignac number, because 1185149133 - 2¹² = 1185145037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1185149123) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7863 + ... + 49316.

It is an arithmetic number, because the mean of its divisors is an integer number (56493840).

Almost surely, 2^1185149133 is an apocalyptic number.

It is an amenable number.

1185149133 is a deficient number, since it is larger than the sum of its proper divisors (848629107).

1185149133 is a wasteful number, since it uses less digits than its factorization.

1185149133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57246 (or 57236 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 1185149133 is about 34425.9950182998. The cubic root of 1185149133 is about 1058.2566373806.

The spelling of 1185149133 in words is "one billion, one hundred eighty-five million, one hundred forty-nine thousand, one hundred thirty-three".