2054178881 has 2 divisors, whose sum is σ = 2054178882. Its totient is φ = 2054178880.

The previous prime is 2054178859. The next prime is 2054178883. The reversal of 2054178881 is 1888714502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2039425600 + 14753281 = 45160^2 + 3841^2 .

It is a cyclic number.

It is not a de Polignac number, because 2054178881 - 2²⁶ = 1987070017 is a prime.

It is a super-2 number, since 2×2054178881² = 8439301750292824322, which contains 22 as substring.

Together with 2054178883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2054178883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1027089440 + 1027089441.

It is an arithmetic number, because the mean of its divisors is an integer number (1027089441).

Almost surely, 2^2054178881 is an apocalyptic number.

It is an amenable number.

2054178881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2054178881 is an equidigital number, since it uses as much as digits as its factorization.

2054178881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 143360, while the sum is 44.

The square root of 2054178881 is about 45323.0502173011. The cubic root of 2054178881 is about 1271.1966898367.

The spelling of 2054178881 in words is "two billion, fifty-four million, one hundred seventy-eight thousand, eight hundred eighty-one".