1170043978 has 32 divisors (see below), whose sum is σ = 1896935040. Its totient is φ = 539447040.

The previous prime is 1170043969. The next prime is 1170044009. The reversal of 1170043978 is 8793400711.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1170043978.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1132150 + ... + 1133182.

It is an arithmetic number, because the mean of its divisors is an integer number (59279220).

Almost surely, 2^1170043978 is an apocalyptic number.

1170043978 is a deficient number, since it is larger than the sum of its proper divisors (726891062).

1170043978 is a wasteful number, since it uses less digits than its factorization.

1170043978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 1170043978 is about 34205.9056012262. The cubic root of 1170043978 is about 1053.7414453886.

The spelling of 1170043978 in words is "one billion, one hundred seventy million, forty-three thousand, nine hundred seventy-eight".