1166535951 has 32 divisors (see below), whose sum is σ = 1887767040. Its totient is φ = 625895424.

The previous prime is 1166535943. The next prime is 1166536013. The reversal of 1166535951 is 1595356611.

It is not a de Polignac number, because 1166535951 - 2³ = 1166535943 is a prime.

It is a super-2 number, since 2×1166535951² = 2721612249950948802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166535941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32151 + ... + 58023.

It is an arithmetic number, because the mean of its divisors is an integer number (58992720).

Almost surely, 2^1166535951 is an apocalyptic number.

1166535951 is a deficient number, since it is larger than the sum of its proper divisors (721231089).

1166535951 is a wasteful number, since it uses less digits than its factorization.

1166535951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26015.

The product of its digits is 121500, while the sum is 42.

The square root of 1166535951 is about 34154.5890181686. The cubic root of 1166535951 is about 1052.6872816097.

The spelling of 1166535951 in words is "one billion, one hundred sixty-six million, five hundred thirty-five thousand, nine hundred fifty-one".