1778412108 has 48 divisors (see below), whose sum is σ = 4533209856. Its totient is φ = 538157760.

The previous prime is 1778412107. The next prime is 1778412127. The reversal of 1778412108 is 8012148771.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1778412107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89010 + ... + 107142.

It is an arithmetic number, because the mean of its divisors is an integer number (94441872).

Almost surely, 2^1778412108 is an apocalyptic number.

It is an amenable number.

1778412108 is an abundant number, since it is smaller than the sum of its proper divisors (2754797748).

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

1778412108 is a wasteful number, since it uses less digits than its factorization.

1778412108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18894 (or 18892 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 39.

The square root of 1778412108 is about 42171.2236957857. The cubic root of 1778412108 is about 1211.5577932352.

It can be divided in two parts, 17784 and 12108, that added together give a palindrome (29892).

The spelling of 1778412108 in words is "one billion, seven hundred seventy-eight million, four hundred twelve thousand, one hundred eight".