1538081299 has 2 divisors, whose sum is σ = 1538081300. Its totient is φ = 1538081298.

The previous prime is 1538081263. The next prime is 1538081329. The reversal of 1538081299 is 9921808351.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1538081299 - 2¹⁹ = 1537557011 is a prime.

It is not a weakly prime, because it can be changed into another prime (1538021299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769040649 + 769040650.

It is an arithmetic number, because the mean of its divisors is an integer number (769040650).

Almost surely, 2^1538081299 is an apocalyptic number.

1538081299 is a deficient number, since it is larger than the sum of its proper divisors (1).

1538081299 is an equidigital number, since it uses as much as digits as its factorization.

1538081299 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 46.

The square root of 1538081299 is about 39218.3796070159. The cubic root of 1538081299 is about 1154.3205586425.

The spelling of 1538081299 in words is "one billion, five hundred thirty-eight million, eighty-one thousand, two hundred ninety-nine".