1320211847 has 2 divisors, whose sum is σ = 1320211848. Its totient is φ = 1320211846.

The previous prime is 1320211819. The next prime is 1320211877. The reversal of 1320211847 is 7481120231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1320211847 - 2⁸ = 1320211591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320211877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660105923 + 660105924.

It is an arithmetic number, because the mean of its divisors is an integer number (660105924).

Almost surely, 2^1320211847 is an apocalyptic number.

1320211847 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320211847 is an equidigital number, since it uses as much as digits as its factorization.

1320211847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 1320211847 is about 36334.7195805885. The cubic root of 1320211847 is about 1097.0199911764.

The spelling of 1320211847 in words is "one billion, three hundred twenty million, two hundred eleven thousand, eight hundred forty-seven".