1166535946 has 4 divisors (see below), whose sum is σ = 1749803922. Its totient is φ = 583267972.

The previous prime is 1166535943. The next prime is 1166536013. The reversal of 1166535946 is 6495356611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6495356611 = 233 ⋅27877067.

It can be written as a sum of positive squares in only one way, i.e., 1163560321 + 2975625 = 34111^2 + 1725^2 .

It is a super-2 number, since 2×1166535946² = 2721612226620229832, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1166535896 and 1166535905.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 291633985 + ... + 291633988.

Almost surely, 2^1166535946 is an apocalyptic number.

1166535946 is a deficient number, since it is larger than the sum of its proper divisors (583267976).

1166535946 is an equidigital number, since it uses as much as digits as its factorization.

1166535946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583267975.

The product of its digits is 583200, while the sum is 46.

The square root of 1166535946 is about 34154.5889449719. The cubic root of 1166535946 is about 1052.6872801057.

The spelling of 1166535946 in words is "one billion, one hundred sixty-six million, five hundred thirty-five thousand, nine hundred forty-six".