2278111149 has 28 divisors (see below), whose sum is σ = 3419813376. Its totient is φ = 1516870152.

The previous prime is 2278111123. The next prime is 2278111151. The reversal of 2278111149 is 9411118722.

It is not a de Polignac number, because 2278111149 - 2⁷ = 2278111021 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278111169) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 846484 + ... + 849170.

It is an arithmetic number, because the mean of its divisors is an integer number (122136192).

Almost surely, 2^2278111149 is an apocalyptic number.

It is an amenable number.

2278111149 is a deficient number, since it is larger than the sum of its proper divisors (1141702227).

2278111149 is an equidigital number, since it uses as much as digits as its factorization.

2278111149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3868 (or 3853 counting only the distinct ones).

The product of its digits is 8064, while the sum is 36.

The square root of 2278111149 is about 47729.5626315599. The cubic root of 2278111149 is about 1315.8053154862.

It can be divided in two parts, 22781 and 11149, that added together give a triangular number (33930 = T₂₆₀).

The spelling of 2278111149 in words is "two billion, two hundred seventy-eight million, one hundred eleven thousand, one hundred forty-nine".