2054406181 has 2 divisors, whose sum is σ = 2054406182. Its totient is φ = 2054406180.

The previous prime is 2054406169. The next prime is 2054406203. The reversal of 2054406181 is 1816044502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2034461025 + 19945156 = 45105^2 + 4466^2 .

It is a cyclic number.

It is not a de Polignac number, because 2054406181 - 2¹⁵ = 2054373413 is a prime.

It is a super-2 number, since 2×2054406181² = 8441169513062009522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2054406131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1027203090 + 1027203091.

It is an arithmetic number, because the mean of its divisors is an integer number (1027203091).

Almost surely, 2^2054406181 is an apocalyptic number.

It is an amenable number.

2054406181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2054406181 is an equidigital number, since it uses as much as digits as its factorization.

2054406181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 2054406181 is about 45325.5577020294. The cubic root of 2054406181 is about 1271.2435751320.

The spelling of 2054406181 in words is "two billion, fifty-four million, four hundred six thousand, one hundred eighty-one".