1166465443 has 8 divisors (see below), whose sum is σ = 1370393136. Its totient is φ = 978852000.

The previous prime is 1166465437. The next prime is 1166465471. The reversal of 1166465443 is 3445646611.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1166465443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1166465396 and 1166465405.

It is not an unprimeable number, because it can be changed into a prime (1166465543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4078408 + ... + 4078693.

It is an arithmetic number, because the mean of its divisors is an integer number (171299142).

Almost surely, 2^1166465443 is an apocalyptic number.

1166465443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1166465443 is a deficient number, since it is larger than the sum of its proper divisors (203927693).

1166465443 is a wasteful number, since it uses less digits than its factorization.

1166465443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8157125.

The product of its digits is 207360, while the sum is 40.

The square root of 1166465443 is about 34153.5568133101. The cubic root of 1166465443 is about 1052.6660722704. Note that the first 3 decimals are identical.

The spelling of 1166465443 in words is "one billion, one hundred sixty-six million, four hundred sixty-five thousand, four hundred forty-three".