1538533049 has 2 divisors, whose sum is σ = 1538533050. Its totient is φ = 1538533048.

The previous prime is 1538532977. The next prime is 1538533063. The reversal of 1538533049 is 9403358351.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1174295824 + 364237225 = 34268^2 + 19085^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1538533049 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1538532997 and 1538533015.

It is not a weakly prime, because it can be changed into another prime (1538533079) 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, 769266524 + 769266525.

It is an arithmetic number, because the mean of its divisors is an integer number (769266525).

Almost surely, 2^1538533049 is an apocalyptic number.

It is an amenable number.

1538533049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1538533049 is an equidigital number, since it uses as much as digits as its factorization.

1538533049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 1538533049 is about 39224.1386011216. The cubic root of 1538533049 is about 1154.4335594459.

The spelling of 1538533049 in words is "one billion, five hundred thirty-eight million, five hundred thirty-three thousand, forty-nine".