1779942406 has 32 divisors (see below), whose sum is σ = 2938320000. Its totient is φ = 801964800.

The previous prime is 1779942403. The next prime is 1779942431. The reversal of 1779942406 is 6042499771.

It is a self number, because there is not a number n which added to its sum of digits gives 1779942406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1779942403) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1424470 + ... + 1425718.

It is an arithmetic number, because the mean of its divisors is an integer number (91822500).

Almost surely, 2^1779942406 is an apocalyptic number.

1779942406 is a deficient number, since it is larger than the sum of its proper divisors (1158377594).

1779942406 is a wasteful number, since it uses less digits than its factorization.

1779942406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780.

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 1779942406 is about 42189.3636595766. The cubic root of 1779942406 is about 1211.9052029499.

The spelling of 1779942406 in words is "one billion, seven hundred seventy-nine million, nine hundred forty-two thousand, four hundred six".