1778769068 has 6 divisors (see below), whose sum is σ = 3112845876. Its totient is φ = 889384532.

The previous prime is 1778769029. The next prime is 1778769079. The reversal of 1778769068 is 8609678771.

It is a junction number, because it is equal to n+sod(n) for n = 1778768998 and 1778769016.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222346130 + ... + 222346137.

It is an arithmetic number, because the mean of its divisors is an integer number (518807646).

Almost surely, 2^1778769068 is an apocalyptic number.

It is an amenable number.

1778769068 is a deficient number, since it is larger than the sum of its proper divisors (1334076808).

1778769068 is a wasteful number, since it uses less digits than its factorization.

1778769068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444692271 (or 444692269 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 59.

The square root of 1778769068 is about 42175.4557533170. The cubic root of 1778769068 is about 1211.6388484521.

The spelling of 1778769068 in words is "one billion, seven hundred seventy-eight million, seven hundred sixty-nine thousand, sixty-eight".