2054171880 has 256 divisors, whose sum is σ = 7390310400. Its totient is φ = 505589760.

The previous prime is 2054171843. The next prime is 2054171881. The reversal of 2054171880 is 881714502.

2054171880 is a `hidden beast` number, since 20 + 541 + 7 + 18 + 80 = 666.

It is a super-2 number, since 2×2054171880² = 8439244225165468800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2054171881) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 972025 + ... + 974135.

It is an arithmetic number, because the mean of its divisors is an integer number (28868400).

Almost surely, 2^2054171880 is an apocalyptic number.

2054171880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2054171880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3695155200).

2054171880 is an abundant number, since it is smaller than the sum of its proper divisors (5336138520).

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

2054171880 is a wasteful number, since it uses less digits than its factorization.

2054171880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2201 (or 2191 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 2054171880 is about 45322.9729828042. The cubic root of 2054171880 is about 1271.1952456817.

The spelling of 2054171880 in words is "two billion, fifty-four million, one hundred seventy-one thousand, eight hundred eighty".