2278911338 has 48 divisors (see below), whose sum is σ = 3967656000. Its totient is φ = 978246720.

The previous prime is 2278911337. The next prime is 2278911347. The reversal of 2278911338 is 8331198722.

It is not an unprimeable number, because it can be changed into a prime (2278911337) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2017958 + ... + 2019086.

It is an arithmetic number, because the mean of its divisors is an integer number (82659500).

Almost surely, 2^2278911338 is an apocalyptic number.

2278911338 is a deficient number, since it is larger than the sum of its proper divisors (1688744662).

2278911338 is a wasteful number, since it uses less digits than its factorization.

2278911338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611 (or 1600 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 2278911338 is about 47737.9444257919. The cubic root of 2278911338 is about 1315.9593567977.

The spelling of 2278911338 in words is "two billion, two hundred seventy-eight million, nine hundred eleven thousand, three hundred thirty-eight".