2228186836 has 6 divisors (see below), whose sum is σ = 3899326970. Its totient is φ = 1114093416.

The previous prime is 2228186803. The next prime is 2228186837. The reversal of 2228186836 is 6386818222.

It can be written as a sum of positive squares in only one way, i.e., 1441720900 + 786465936 = 37970^2 + 28044^2 .

It is a super-2 number, since 2×2228186836² = 9929633152247381792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2228186837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278523351 + ... + 278523358.

Almost surely, 2^2228186836 is an apocalyptic number.

It is an amenable number.

2228186836 is a deficient number, since it is larger than the sum of its proper divisors (1671140134).

2228186836 is a wasteful number, since it uses less digits than its factorization.

2228186836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557046713 (or 557046711 counting only the distinct ones).

The product of its digits is 442368, while the sum is 46.

The square root of 2228186836 is about 47203.6739671818. The cubic root of 2228186836 is about 1306.1223710349.

The spelling of 2228186836 in words is "two billion, two hundred twenty-eight million, one hundred eighty-six thousand, eight hundred thirty-six".