1779166842 has 16 divisors (see below), whose sum is σ = 3580165920. Its totient is φ = 589416912.

The previous prime is 1779166799. The next prime is 1779166853. The reversal of 1779166842 is 2486619771.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 908617 + ... + 910572.

It is an arithmetic number, because the mean of its divisors is an integer number (223760370).

Almost surely, 2^1779166842 is an apocalyptic number.

1779166842 is an abundant number, since it is smaller than the sum of its proper divisors (1800999078).

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

1779166842 is a wasteful number, since it uses less digits than its factorization.

1779166842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819357.

The product of its digits is 1016064, while the sum is 51.

The square root of 1779166842 is about 42180.1711945317. The cubic root of 1779166842 is about 1211.7291585658.

The spelling of 1779166842 in words is "one billion, seven hundred seventy-nine million, one hundred sixty-six thousand, eight hundred forty-two".