1778020044 has 48 divisors (see below), whose sum is σ = 4372794720. Its totient is φ = 561433600.

The previous prime is 1778020039. The next prime is 1778020087. The reversal of 1778020044 is 4400208771.

It is a super-2 number, since 2×1778020044² = 6322710553731523872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1778019987 and 1778020014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29757 + ... + 66644.

It is an arithmetic number, because the mean of its divisors is an integer number (91099890).

Almost surely, 2^1778020044 is an apocalyptic number.

It is an amenable number.

1778020044 is an abundant number, since it is smaller than the sum of its proper divisors (2594774676).

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

1778020044 is a wasteful number, since it uses less digits than its factorization.

1778020044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96490 (or 96488 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 1778020044 is about 42166.5749616921. The cubic root of 1778020044 is about 1211.4687544230.

The spelling of 1778020044 in words is "one billion, seven hundred seventy-eight million, twenty thousand, forty-four".