1166871651 has 16 divisors (see below), whose sum is σ = 1752019968. Its totient is φ = 684381600.

The previous prime is 1166871593. The next prime is 1166871703. The reversal of 1166871651 is 1561786611.

It is not a de Polignac number, because 1166871651 - 2¹⁹ = 1166347363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1166871151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 569296 + ... + 571341.

It is an arithmetic number, because the mean of its divisors is an integer number (109501248).

Almost surely, 2^1166871651 is an apocalyptic number.

1166871651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1166871651 is a deficient number, since it is larger than the sum of its proper divisors (585148317).

1166871651 is a wasteful number, since it uses less digits than its factorization.

1166871651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140682.

The product of its digits is 60480, while the sum is 42.

The square root of 1166871651 is about 34159.5030847933. The cubic root of 1166871651 is about 1052.7882509874.

The spelling of 1166871651 in words is "one billion, one hundred sixty-six million, eight hundred seventy-one thousand, six hundred fifty-one".