1778880056 has 16 divisors (see below), whose sum is σ = 3352334040. Its totient is φ = 884924320.

The previous prime is 1778879951. The next prime is 1778880101. The reversal of 1778880056 is 6500888771.

It is a junction number, because it is equal to n+sod(n) for n = 1778879986 and 1778880013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562790 + ... + 565941.

Almost surely, 2^1778880056 is an apocalyptic number.

It is an amenable number.

1778880056 is a deficient number, since it is larger than the sum of its proper divisors (1573453984).

1778880056 is a wasteful number, since it uses less digits than its factorization.

1778880056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128934 (or 1128930 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 50.

The square root of 1778880056 is about 42176.7715217749. The cubic root of 1778880056 is about 1211.6640483836.

The spelling of 1778880056 in words is "one billion, seven hundred seventy-eight million, eight hundred eighty thousand, fifty-six".