1166345923 has 4 divisors (see below), whose sum is σ = 1167444208. Its totient is φ = 1165247640.

The previous prime is 1166345861. The next prime is 1166345933. The reversal of 1166345923 is 3295436611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1166345923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166345933) 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, 547548 + ... + 549673.

It is an arithmetic number, because the mean of its divisors is an integer number (291861052).

Almost surely, 2^1166345923 is an apocalyptic number.

1166345923 is a deficient number, since it is larger than the sum of its proper divisors (1098285).

1166345923 is a wasteful number, since it uses less digits than its factorization.

1166345923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098284.

The product of its digits is 116640, while the sum is 40.

The square root of 1166345923 is about 34151.8070239336. The cubic root of 1166345923 is about 1052.6301177987.

The spelling of 1166345923 in words is "one billion, one hundred sixty-six million, three hundred forty-five thousand, nine hundred twenty-three".