1021834444378 has 16 divisors (see below), whose sum is σ = 1692238425696. Its totient is φ = 458874174640.

The previous prime is 1021834444373. The next prime is 1021834444391. The reversal of 1021834444378 is 8734444381201.

It is not an unprimeable number, because it can be changed into a prime (1021834444373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279799501 + ... + 279803152.

It is an arithmetic number, because the mean of its divisors is an integer number (105764901606).

Almost surely, 2^{1021834444378} is an apocalyptic number.

1021834444378 is a deficient number, since it is larger than the sum of its proper divisors (670403981318).

1021834444378 is a wasteful number, since it uses less digits than its factorization.

1021834444378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559602749.

The product of its (nonzero) digits is 2064384, while the sum is 49.

The spelling of 1021834444378 in words is "one trillion, twenty-one billion, eight hundred thirty-four million, four hundred forty-four thousand, three hundred seventy-eight".