2911949380 has 24 divisors (see below), whose sum is σ = 6474805848. Its totient is φ = 1096263168.

The previous prime is 2911949371. The next prime is 2911949407. The reversal of 2911949380 is 839491192.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 902041156 + 2009908224 = 30034^2 + 44832^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2911949380.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4281939 + ... + 4282618.

It is an arithmetic number, because the mean of its divisors is an integer number (269783577).

Almost surely, 2^2911949380 is an apocalyptic number.

2911949380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2911949380 is an abundant number, since it is smaller than the sum of its proper divisors (3562856468).

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

2911949380 is a wasteful number, since it uses less digits than its factorization.

2911949380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8564583 (or 8564581 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 2911949380 is about 53962.4812253847. The cubic root of 2911949380 is about 1427.9991218704. Note that the first 3 decimals are identical.

The spelling of 2911949380 in words is "two billion, nine hundred eleven million, nine hundred forty-nine thousand, three hundred eighty".