1187057671 has 2 divisors, whose sum is σ = 1187057672. Its totient is φ = 1187057670.

The previous prime is 1187057629. The next prime is 1187057681. The reversal of 1187057671 is 1767507811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1187057671 - 2⁹ = 1187057159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1187057681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 593528835 + 593528836.

It is an arithmetic number, because the mean of its divisors is an integer number (593528836).

Almost surely, 2^1187057671 is an apocalyptic number.

1187057671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1187057671 is an equidigital number, since it uses as much as digits as its factorization.

1187057671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82320, while the sum is 43.

The square root of 1187057671 is about 34453.7032987747. The cubic root of 1187057671 is about 1058.8243970958.

The spelling of 1187057671 in words is "one billion, one hundred eighty-seven million, fifty-seven thousand, six hundred seventy-one".