2278203813 has 40 divisors (see below), whose sum is σ = 3625376832. Its totient is φ = 1420758144.

The previous prime is 2278203803. The next prime is 2278203841. The reversal of 2278203813 is 3183028722.

It is a happy number.

2278203813 is a `hidden beast` number, since 2 + 278 + 2 + 0 + 381 + 3 = 666.

It is not a de Polignac number, because 2278203813 - 2¹⁰ = 2278202789 is a prime.

It is a super-2 number, since 2×2278203813² = 10380425227135477938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278203803) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 225006 + ... + 234912.

Almost surely, 2^2278203813 is an apocalyptic number.

It is an amenable number.

2278203813 is a deficient number, since it is larger than the sum of its proper divisors (1347173019).

2278203813 is a wasteful number, since it uses less digits than its factorization.

2278203813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10103 (or 10094 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 2278203813 is about 47730.5333408291. The cubic root of 2278203813 is about 1315.8231557235.

The spelling of 2278203813 in words is "two billion, two hundred seventy-eight million, two hundred three thousand, eight hundred thirteen".