1173271487 has 2 divisors, whose sum is σ = 1173271488. Its totient is φ = 1173271486.

The previous prime is 1173271471. The next prime is 1173271513. The reversal of 1173271487 is 7841723711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1173271487 - 2⁴ = 1173271471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1173271427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 586635743 + 586635744.

It is an arithmetic number, because the mean of its divisors is an integer number (586635744).

Almost surely, 2^1173271487 is an apocalyptic number.

1173271487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1173271487 is an equidigital number, since it uses as much as digits as its factorization.

1173271487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65856, while the sum is 41.

The square root of 1173271487 is about 34253.0507692381. The cubic root of 1173271487 is about 1054.7094539190.

The spelling of 1173271487 in words is "one billion, one hundred seventy-three million, two hundred seventy-one thousand, four hundred eighty-seven".