2538231887 has 2 divisors, whose sum is σ = 2538231888. Its totient is φ = 2538231886.

The previous prime is 2538231853. The next prime is 2538231893. The reversal of 2538231887 is 7881328352.

It is a happy number.

2538231887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2538231887 - 2¹⁸ = 2537969743 is a prime.

It is a super-2 number, since 2×2538231887² = 12885242224367161538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2538231187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1269115943 + 1269115944.

It is an arithmetic number, because the mean of its divisors is an integer number (1269115944).

Almost surely, 2^2538231887 is an apocalyptic number.

2538231887 is a deficient number, since it is larger than the sum of its proper divisors (1).

2538231887 is an equidigital number, since it uses as much as digits as its factorization.

2538231887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 47.

The square root of 2538231887 is about 50380.8682636574. The cubic root of 2538231887 is about 1364.0923245055.

The spelling of 2538231887 in words is "two billion, five hundred thirty-eight million, two hundred thirty-one thousand, eight hundred eighty-seven".