1330525139 has 2 divisors, whose sum is σ = 1330525140. Its totient is φ = 1330525138.

The previous prime is 1330525123. The next prime is 1330525187. The reversal of 1330525139 is 9315250331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1330525139 - 2⁴ = 1330525123 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1330525039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665262569 + 665262570.

It is an arithmetic number, because the mean of its divisors is an integer number (665262570).

Almost surely, 2^1330525139 is an apocalyptic number.

1330525139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330525139 is an equidigital number, since it uses as much as digits as its factorization.

1330525139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12150, while the sum is 32.

The square root of 1330525139 is about 36476.3641143138. The cubic root of 1330525139 is about 1099.8691687374.

The spelling of 1330525139 in words is "one billion, three hundred thirty million, five hundred twenty-five thousand, one hundred thirty-nine".