1778130306 has 20 divisors (see below), whose sum is σ = 3984329382. Its totient is φ = 592710048.

The previous prime is 1778130301. The next prime is 1778130313. The reversal of 1778130306 is 6030318771.

1778130306 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 895505625 + 882624681 = 29925^2 + 29709^2 .

It is not an unprimeable number, because it can be changed into a prime (1778130301) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5487895 + ... + 5488218.

Almost surely, 2^1778130306 is an apocalyptic number.

1778130306 is an abundant number, since it is smaller than the sum of its proper divisors (2206199076).

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

1778130306 is a wasteful number, since it uses less digits than its factorization.

1778130306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10976127 (or 10976118 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 1778130306 is about 42167.8823988115. The cubic root of 1778130306 is about 1211.4937965491.

The spelling of 1778130306 in words is "one billion, seven hundred seventy-eight million, one hundred thirty thousand, three hundred six".