1166123403 has 12 divisors (see below), whose sum is σ = 1696520280. Its totient is φ = 771821856.

The previous prime is 1166123369. The next prime is 1166123411. The reversal of 1166123403 is 3043216611.

1166123403 is a `hidden beast` number, since 1 + 1 + 6 + 612 + 3 + 40 + 3 = 666.

It is not a de Polignac number, because 1166123403 - 2¹⁸ = 1165861259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1166123443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 464826 + ... + 467327.

It is an arithmetic number, because the mean of its divisors is an integer number (141376690).

Almost surely, 2^1166123403 is an apocalyptic number.

1166123403 is a deficient number, since it is larger than the sum of its proper divisors (530396877).

1166123403 is a wasteful number, since it uses less digits than its factorization.

1166123403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932298 (or 932295 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1166123403 is about 34148.5490614169. The cubic root of 1166123403 is about 1052.5631719220.

The spelling of 1166123403 in words is "one billion, one hundred sixty-six million, one hundred twenty-three thousand, four hundred three".