1156064171 has 4 divisors (see below), whose sum is σ = 1159557144. Its totient is φ = 1152571200.

The previous prime is 1156064099. The next prime is 1156064191. The reversal of 1156064171 is 1714606511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1714606511 = 41 ⋅41819671.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1156064171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1156064191) 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, 1745990 + ... + 1746651.

It is an arithmetic number, because the mean of its divisors is an integer number (289889286).

Almost surely, 2^1156064171 is an apocalyptic number.

1156064171 is a deficient number, since it is larger than the sum of its proper divisors (3492973).

1156064171 is an equidigital number, since it uses as much as digits as its factorization.

1156064171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3492972.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 1156064171 is about 34000.9436780805. The cubic root of 1156064171 is about 1049.5278817790.

The spelling of 1156064171 in words is "one billion, one hundred fifty-six million, sixty-four thousand, one hundred seventy-one".