1166451671 has 16 divisors (see below), whose sum is σ = 1458362880. Its totient is φ = 906370080.

The previous prime is 1166451563. The next prime is 1166451673. The reversal of 1166451671 is 1761546611.

It is not a de Polignac number, because 1166451671 - 2¹⁰ = 1166450647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166451673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6545 + ... + 48741.

It is an arithmetic number, because the mean of its divisors is an integer number (91147680).

Almost surely, 2^1166451671 is an apocalyptic number.

1166451671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1166451671 is a deficient number, since it is larger than the sum of its proper divisors (291911209).

1166451671 is a wasteful number, since it uses less digits than its factorization.

1166451671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42574.

The product of its digits is 30240, while the sum is 38.

The square root of 1166451671 is about 34153.3551938898. The cubic root of 1166451671 is about 1052.6619294490.

The spelling of 1166451671 in words is "one billion, one hundred sixty-six million, four hundred fifty-one thousand, six hundred seventy-one".