1173489071 has 4 divisors (see below), whose sum is σ = 1173561144. Its totient is φ = 1173417000.

The previous prime is 1173489047. The next prime is 1173489113. The reversal of 1173489071 is 1709843711.

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.

It is a cyclic number.

It is not a de Polignac number, because 1173489071 - 2¹⁴ = 1173472687 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 (1173489041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1241 + ... + 48461.

It is an arithmetic number, because the mean of its divisors is an integer number (293390286).

Almost surely, 2^1173489071 is an apocalyptic number.

1173489071 is a deficient number, since it is larger than the sum of its proper divisors (72073).

1173489071 is an equidigital number, since it uses as much as digits as its factorization.

1173489071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72072.

The product of its (nonzero) digits is 42336, while the sum is 41.

The square root of 1173489071 is about 34256.2267478483. The cubic root of 1173489071 is about 1054.7746487523.

The spelling of 1173489071 in words is "one billion, one hundred seventy-three million, four hundred eighty-nine thousand, seventy-one".