1161646123 has 8 divisors (see below), whose sum is σ = 1285099776. Its totient is φ = 1041167400.

The previous prime is 1161646093. The next prime is 1161646133. The reversal of 1161646123 is 3216461611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1161646123 - 2¹⁷ = 1161515051 is a prime.

It is a super-2 number, since 2×1161646123² = 2698843430161862258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161646133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 742911 + ... + 744472.

It is an arithmetic number, because the mean of its divisors is an integer number (160637472).

Almost surely, 2^1161646123 is an apocalyptic number.

1161646123 is a deficient number, since it is larger than the sum of its proper divisors (123453653).

1161646123 is a wasteful number, since it uses less digits than its factorization.

1161646123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487465.

The product of its digits is 5184, while the sum is 31.

The square root of 1161646123 is about 34082.9300823741. The cubic root of 1161646123 is about 1051.2143540570.

The spelling of 1161646123 in words is "one billion, one hundred sixty-one million, six hundred forty-six thousand, one hundred twenty-three".