2838450978 has 128 divisors (see below), whose sum is σ = 7071805440. Its totient is φ = 836544960.

The previous prime is 2838450977. The next prime is 2838450991. The reversal of 2838450978 is 8790548382.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2838450971) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8179801 + ... + 8180147.

It is an arithmetic number, because the mean of its divisors is an integer number (55248480).

Almost surely, 2^2838450978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2838450978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3535902720).

2838450978 is an abundant number, since it is smaller than the sum of its proper divisors (4233354462).

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

2838450978 is a wasteful number, since it uses less digits than its factorization.

2838450978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709 (or 703 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The square root of 2838450978 is about 53277.1149556730. The cubic root of 2838450978 is about 1415.8822348915.

The spelling of 2838450978 in words is "two billion, eight hundred thirty-eight million, four hundred fifty thousand, nine hundred seventy-eight".