2538143957 has 2 divisors, whose sum is σ = 2538143958. Its totient is φ = 2538143956.

The previous prime is 2538143939. The next prime is 2538144023. The reversal of 2538143957 is 7593418352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1486179601 + 1051964356 = 38551^2 + 32434^2 .

It is a cyclic number.

It is not a de Polignac number, because 2538143957 - 2⁶ = 2538143893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2538143917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1269071978 + 1269071979.

It is an arithmetic number, because the mean of its divisors is an integer number (1269071979).

Almost surely, 2^2538143957 is an apocalyptic number.

It is an amenable number.

2538143957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2538143957 is an equidigital number, since it uses as much as digits as its factorization.

2538143957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 47.

The square root of 2538143957 is about 50379.9956034139. The cubic root of 2538143957 is about 1364.0765725926.

The spelling of 2538143957 in words is "two billion, five hundred thirty-eight million, one hundred forty-three thousand, nine hundred fifty-seven".