1538731141 has 2 divisors, whose sum is σ = 1538731142. Its totient is φ = 1538731140.

The previous prime is 1538731127. The next prime is 1538731171. The reversal of 1538731141 is 1411378351.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1058200900 + 480530241 = 32530^2 + 21921^2 .

It is a cyclic number.

It is not a de Polignac number, because 1538731141 - 2¹⁹ = 1538206853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1538731097 and 1538731106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1538731171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769365570 + 769365571.

It is an arithmetic number, because the mean of its divisors is an integer number (769365571).

Almost surely, 2^1538731141 is an apocalyptic number.

It is an amenable number.

1538731141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1538731141 is an equidigital number, since it uses as much as digits as its factorization.

1538731141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 34.

The square root of 1538731141 is about 39226.6636485949. The cubic root of 1538731141 is about 1154.4831032281.

The spelling of 1538731141 in words is "one billion, five hundred thirty-eight million, seven hundred thirty-one thousand, one hundred forty-one".