1942779218408 has 64 divisors (see below), whose sum is σ = 4397331333120. Its totient is φ = 787022308800.

The previous prime is 1942779218407. The next prime is 1942779218417. The reversal of 1942779218408 is 8048129772491.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is not an unprimeable number, because it can be changed into a prime (1942779218407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12938288 + ... + 13087583.

It is an arithmetic number, because the mean of its divisors is an integer number (68708302080).

Almost surely, 2^{1942779218408} is an apocalyptic number.

It is an amenable number.

1942779218408 is an abundant number, since it is smaller than the sum of its proper divisors (2454552114712).

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

1942779218408 is a wasteful number, since it uses less digits than its factorization.

1942779218408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26025958 (or 26025954 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 62.

The spelling of 1942779218408 in words is "one trillion, nine hundred forty-two billion, seven hundred seventy-nine million, two hundred eighteen thousand, four hundred eight".