1779459642 has 12 divisors (see below), whose sum is σ = 3855495930. Its totient is φ = 593153208.

The previous prime is 1779459629. The next prime is 1779459667. The reversal of 1779459642 is 2469549771.

1779459642 is a `hidden beast` number, since 1 + 7 + 7 + 9 + 4 + 596 + 42 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1292330601 + 487129041 = 35949^2 + 22071^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49429417 + ... + 49429452.

Almost surely, 2^1779459642 is an apocalyptic number.

1779459642 is an abundant number, since it is smaller than the sum of its proper divisors (2076036288).

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

1779459642 is a wasteful number, since it uses less digits than its factorization.

1779459642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98858877 (or 98858874 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The square root of 1779459642 is about 42183.6418769172. The cubic root of 1779459642 is about 1211.7956269127.

The spelling of 1779459642 in words is "one billion, seven hundred seventy-nine million, four hundred fifty-nine thousand, six hundred forty-two".