1171374487 has 2 divisors, whose sum is σ = 1171374488. Its totient is φ = 1171374486.

The previous prime is 1171374439. The next prime is 1171374517. The reversal of 1171374487 is 7844731711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1171374487 - 2¹⁹ = 1170850199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1171374427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585687243 + 585687244.

It is an arithmetic number, because the mean of its divisors is an integer number (585687244).

Almost surely, 2^1171374487 is an apocalyptic number.

1171374487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1171374487 is an equidigital number, since it uses as much as digits as its factorization.

1171374487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131712, while the sum is 43.

The square root of 1171374487 is about 34225.3486030457. The cubic root of 1171374487 is about 1054.1407128260.

The spelling of 1171374487 in words is "one billion, one hundred seventy-one million, three hundred seventy-four thousand, four hundred eighty-seven".