1197438647 has 2 divisors, whose sum is σ = 1197438648. Its totient is φ = 1197438646.

The previous prime is 1197438631. The next prime is 1197438727. The reversal of 1197438647 is 7468347911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1197438647 - 2⁴ = 1197438631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1197438595 and 1197438604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1197438617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598719323 + 598719324.

It is an arithmetic number, because the mean of its divisors is an integer number (598719324).

Almost surely, 2^1197438647 is an apocalyptic number.

1197438647 is a deficient number, since it is larger than the sum of its proper divisors (1).

1197438647 is an equidigital number, since it uses as much as digits as its factorization.

1197438647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 50.

The square root of 1197438647 is about 34604.0264564689. The cubic root of 1197438647 is about 1061.9019629131.

The spelling of 1197438647 in words is "one billion, one hundred ninety-seven million, four hundred thirty-eight thousand, six hundred forty-seven".