2538862891 has 2 divisors, whose sum is σ = 2538862892. Its totient is φ = 2538862890.

The previous prime is 2538862877. The next prime is 2538862903. The reversal of 2538862891 is 1982688352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2538862891 - 2⁹ = 2538862379 is a prime.

It is not a weakly prime, because it can be changed into another prime (2538862871) 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, 1269431445 + 1269431446.

It is an arithmetic number, because the mean of its divisors is an integer number (1269431446).

Almost surely, 2^2538862891 is an apocalyptic number.

2538862891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2538862891 is an equidigital number, since it uses as much as digits as its factorization.

2538862891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1658880, while the sum is 52.

The square root of 2538862891 is about 50387.1302119896. The cubic root of 2538862891 is about 1364.2053528436.

The spelling of 2538862891 in words is "two billion, five hundred thirty-eight million, eight hundred sixty-two thousand, eight hundred ninety-one".