2061854239 has 2 divisors, whose sum is σ = 2061854240. Its totient is φ = 2061854238.

The previous prime is 2061854191. The next prime is 2061854243. The reversal of 2061854239 is 9324581602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2061854239 - 2⁷ = 2061854111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2061854279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1030927119 + 1030927120.

It is an arithmetic number, because the mean of its divisors is an integer number (1030927120).

Almost surely, 2^2061854239 is an apocalyptic number.

2061854239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2061854239 is an equidigital number, since it uses as much as digits as its factorization.

2061854239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 2061854239 is about 45407.6451602591. The cubic root of 2061854239 is about 1272.7779806805. Note that the first 3 decimals are identical.

The spelling of 2061854239 in words is "two billion, sixty-one million, eight hundred fifty-four thousand, two hundred thirty-nine".