2278185213 has 16 divisors (see below), whose sum is σ = 3246961536. Its totient is φ = 1417320960.

The previous prime is 2278185187. The next prime is 2278185223. The reversal of 2278185213 is 3125818722.

It is not a de Polignac number, because 2278185213 - 2⁶ = 2278185149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278185223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399820 + ... + 405477.

It is an arithmetic number, because the mean of its divisors is an integer number (202935096).

Almost surely, 2^2278185213 is an apocalyptic number.

2278185213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2278185213 is a deficient number, since it is larger than the sum of its proper divisors (968776323).

2278185213 is a wasteful number, since it uses less digits than its factorization.

2278185213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805364.

The product of its digits is 53760, while the sum is 39.

The square root of 2278185213 is about 47730.3384965998. The cubic root of 2278185213 is about 1315.8195747771.

The spelling of 2278185213 in words is "two billion, two hundred seventy-eight million, one hundred eighty-five thousand, two hundred thirteen".