2918781330 has 128 divisors (see below), whose sum is σ = 7551360000. Its totient is φ = 719808768.

The previous prime is 2918781329. The next prime is 2918781331. The reversal of 2918781330 is 331878192.

2918781330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2918781329) and next prime (2918781331).

It is not an unprimeable number, because it can be changed into a prime (2918781331) 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, 7701081 + ... + 7701459.

It is an arithmetic number, because the mean of its divisors is an integer number (58995000).

Almost surely, 2^2918781330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2918781330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3775680000).

2918781330 is an abundant number, since it is smaller than the sum of its proper divisors (4632578670).

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

2918781330 is a wasteful number, since it uses less digits than its factorization.

2918781330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 2918781330 is about 54025.7469175577. The cubic root of 2918781330 is about 1429.1150294034.

The spelling of 2918781330 in words is "two billion, nine hundred eighteen million, seven hundred eighty-one thousand, three hundred thirty".