2154884166 has 24 divisors (see below), whose sum is σ = 4696879824. Its totient is φ = 713992560.

The previous prime is 2154884141. The next prime is 2154884177. The reversal of 2154884166 is 6614884512.

It is a happy number.

2154884166 is a `hidden beast` number, since 2 + 1 + 5 + 488 + 4 + 166 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 355425 + ... + 361436.

It is an arithmetic number, because the mean of its divisors is an integer number (195703326).

Almost surely, 2^2154884166 is an apocalyptic number.

2154884166 is an abundant number, since it is smaller than the sum of its proper divisors (2541995658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2154884166 is a wasteful number, since it uses less digits than its factorization.

2154884166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717036 (or 717033 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 2154884166 is about 46420.7299167085. The cubic root of 2154884166 is about 1291.6394766907.

The spelling of 2154884166 in words is "two billion, one hundred fifty-four million, eight hundred eighty-four thousand, one hundred sixty-six".