1147865671 has 4 divisors (see below), whose sum is σ = 1147935744. Its totient is φ = 1147795600.

The previous prime is 1147865659. The next prime is 1147865683. The reversal of 1147865671 is 1765687411.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1765687411 = 97 ⋅18202963.

It is an interprime number because it is at equal distance from previous prime (1147865659) and next prime (1147865683).

It is a cyclic number.

It is not a de Polignac number, because 1147865671 - 2¹¹ = 1147863623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147862671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4131 + ... + 48091.

It is an arithmetic number, because the mean of its divisors is an integer number (286983936).

Almost surely, 2^1147865671 is an apocalyptic number.

1147865671 is a deficient number, since it is larger than the sum of its proper divisors (70073).

1147865671 is an equidigital number, since it uses as much as digits as its factorization.

1147865671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70072.

The product of its digits is 282240, while the sum is 46.

The square root of 1147865671 is about 33880.1663366637. The cubic root of 1147865671 is about 1047.0410027404.

The spelling of 1147865671 in words is "one billion, one hundred forty-seven million, eight hundred sixty-five thousand, six hundred seventy-one".