1330997939 has 2 divisors, whose sum is σ = 1330997940. Its totient is φ = 1330997938.

The previous prime is 1330997923. The next prime is 1330997951. The reversal of 1330997939 is 9397990331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1330997939 - 2⁴ = 1330997923 is a prime.

It is not a weakly prime, because it can be changed into another prime (1330997999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665498969 + 665498970.

It is an arithmetic number, because the mean of its divisors is an integer number (665498970).

Almost surely, 2^1330997939 is an apocalyptic number.

1330997939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330997939 is an equidigital number, since it uses as much as digits as its factorization.

1330997939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1240029, while the sum is 53.

The square root of 1330997939 is about 36482.8444477675. The cubic root of 1330997939 is about 1099.9994322311. Note that the first 3 decimals are identical.

The spelling of 1330997939 in words is "one billion, three hundred thirty million, nine hundred ninety-seven thousand, nine hundred thirty-nine".