1301198539 has 2 divisors, whose sum is σ = 1301198540. Its totient is φ = 1301198538.

The previous prime is 1301198531. The next prime is 1301198551. The reversal of 1301198539 is 9358911031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1301198539 - 2³ = 1301198531 is a prime.

It is a super-4 number, since 4×1301198539⁴ (a number of 38 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (1301198531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650599269 + 650599270.

It is an arithmetic number, because the mean of its divisors is an integer number (650599270).

Almost surely, 2^1301198539 is an apocalyptic number.

1301198539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301198539 is an equidigital number, since it uses as much as digits as its factorization.

1301198539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 1301198539 is about 36072.1296709801. The cubic root of 1301198539 is about 1091.7281843804.

The spelling of 1301198539 in words is "one billion, three hundred one million, one hundred ninety-eight thousand, five hundred thirty-nine".