1538382137 has 2 divisors, whose sum is σ = 1538382138. Its totient is φ = 1538382136.

The previous prime is 1538382127. The next prime is 1538382149. The reversal of 1538382137 is 7312838351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1113156496 + 425225641 = 33364^2 + 20621^2 .

It is a cyclic number.

It is not a de Polignac number, because 1538382137 - 2⁸ = 1538381881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1538382094 and 1538382103.

It is not a weakly prime, because it can be changed into another prime (1538382127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769191068 + 769191069.

It is an arithmetic number, because the mean of its divisors is an integer number (769191069).

Almost surely, 2^1538382137 is an apocalyptic number.

It is an amenable number.

1538382137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1538382137 is an equidigital number, since it uses as much as digits as its factorization.

1538382137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 1538382137 is about 39222.2148405722. The cubic root of 1538382137 is about 1154.3958127594.

The spelling of 1538382137 in words is "one billion, five hundred thirty-eight million, three hundred eighty-two thousand, one hundred thirty-seven".