1166451371 has 4 divisors (see below), whose sum is σ = 1217166672. Its totient is φ = 1115736072.

The previous prime is 1166451361. The next prime is 1166451383. The reversal of 1166451371 is 1731546611.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1166451371 - 2¹⁴ = 1166434987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166451301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25357616 + ... + 25357661.

It is an arithmetic number, because the mean of its divisors is an integer number (304291668).

Almost surely, 2^1166451371 is an apocalyptic number.

1166451371 is a deficient number, since it is larger than the sum of its proper divisors (50715301).

1166451371 is an equidigital number, since it uses as much as digits as its factorization.

1166451371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50715300.

The product of its digits is 15120, while the sum is 35.

The square root of 1166451371 is about 34153.3508019345. The cubic root of 1166451371 is about 1052.6618392042.

Adding to 1166451371 its reverse (1731546611), we get a palindrome (2897997982).

The spelling of 1166451371 in words is "one billion, one hundred sixty-six million, four hundred fifty-one thousand, three hundred seventy-one".