1778130340 has 48 divisors (see below), whose sum is σ = 4270291200. Its totient is φ = 609247872.

The previous prime is 1778130323. The next prime is 1778130373. The reversal of 1778130340 is 430318771.

It is a junction number, because it is equal to n+sod(n) for n = 1778130296 and 1778130305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282346 + ... + 288574.

It is an arithmetic number, because the mean of its divisors is an integer number (88964400).

Almost surely, 2^1778130340 is an apocalyptic number.

1778130340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1778130340 is an abundant number, since it is smaller than the sum of its proper divisors (2492160860).

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

1778130340 is a wasteful number, since it uses less digits than its factorization.

1778130340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8284 (or 8282 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 1778130340 is about 42167.8828019620. The cubic root of 1778130340 is about 1211.4938042708.

The spelling of 1778130340 in words is "one billion, seven hundred seventy-eight million, one hundred thirty thousand, three hundred forty".