2154451166 has 32 divisors (see below), whose sum is σ = 3776787648. Its totient is φ = 902603520.

The previous prime is 2154451127. The next prime is 2154451181. The reversal of 2154451166 is 6611544512.

It is a congruent number.

It is an unprimeable number.

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, 203336 + ... + 213668.

It is an arithmetic number, because the mean of its divisors is an integer number (118024614).

Almost surely, 2^2154451166 is an apocalyptic number.

2154451166 is a deficient number, since it is larger than the sum of its proper divisors (1622336482).

2154451166 is a wasteful number, since it uses less digits than its factorization.

2154451166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10676.

The product of its digits is 28800, while the sum is 35.

The square root of 2154451166 is about 46416.0658177748. The cubic root of 2154451166 is about 1291.5529573676.

Adding to 2154451166 its reverse (6611544512), we get a palindrome (8765995678).

The spelling of 2154451166 in words is "two billion, one hundred fifty-four million, four hundred fifty-one thousand, one hundred sixty-six".