1166193870 has 16 divisors (see below), whose sum is σ = 2798865360. Its totient is φ = 310985024.

The previous prime is 1166193869. The next prime is 1166193877. The reversal of 1166193870 is 783916611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166193877) 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, 19436535 + ... + 19436594.

It is an arithmetic number, because the mean of its divisors is an integer number (174929085).

Almost surely, 2^1166193870 is an apocalyptic number.

1166193870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1166193870 is an abundant number, since it is smaller than the sum of its proper divisors (1632671490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1166193870 is a wasteful number, since it uses less digits than its factorization.

1166193870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38873139.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 1166193870 is about 34149.5808173395. The cubic root of 1166193870 is about 1052.5843730730.

The spelling of 1166193870 in words is "one billion, one hundred sixty-six million, one hundred ninety-three thousand, eight hundred seventy".