1207985543 has 2 divisors, whose sum is σ = 1207985544. Its totient is φ = 1207985542.

The previous prime is 1207985533. The next prime is 1207985549. The reversal of 1207985543 is 3455897021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1207985543 - 2¹² = 1207981447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1207985494 and 1207985503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1207985549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 603992771 + 603992772.

It is an arithmetic number, because the mean of its divisors is an integer number (603992772).

Almost surely, 2^1207985543 is an apocalyptic number.

1207985543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1207985543 is an equidigital number, since it uses as much as digits as its factorization.

1207985543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 1207985543 is about 34756.0864166264. The cubic root of 1207985543 is about 1065.0105557081.

The spelling of 1207985543 in words is "one billion, two hundred seven million, nine hundred eighty-five thousand, five hundred forty-three".