1166236533 has 48 divisors (see below), whose sum is σ = 2223801216. Its totient is φ = 570193920.

The previous prime is 1166236517. The next prime is 1166236543. The reversal of 1166236533 is 3356326611.

1166236533 is a `hidden beast` number, since 116 + 6 + 2 + 3 + 6 + 533 = 666.

It is not a de Polignac number, because 1166236533 - 2⁴ = 1166236517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166236543) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37716 + ... + 61277.

It is an arithmetic number, because the mean of its divisors is an integer number (46329192).

Almost surely, 2^1166236533 is an apocalyptic number.

It is an amenable number.

1166236533 is a deficient number, since it is larger than the sum of its proper divisors (1057564683).

1166236533 is a wasteful number, since it uses less digits than its factorization.

1166236533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99034 (or 99031 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The square root of 1166236533 is about 34150.2054605825. The cubic root of 1166236533 is about 1052.5972085202.

The spelling of 1166236533 in words is "one billion, one hundred sixty-six million, two hundred thirty-six thousand, five hundred thirty-three".