2186856364 has 24 divisors (see below), whose sum is σ = 4771323648. Its totient is φ = 852021840.

The previous prime is 2186856359. The next prime is 2186856377. The reversal of 2186856364 is 4636586812.

It is a happy number.

It is a super-3 number, since 3×2186856364³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3549784 + ... + 3550399.

It is an arithmetic number, because the mean of its divisors is an integer number (198805152).

Almost surely, 2^2186856364 is an apocalyptic number.

It is an amenable number.

2186856364 is an abundant number, since it is smaller than the sum of its proper divisors (2584467284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2186856364 is a wasteful number, since it uses less digits than its factorization.

2186856364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7100205 (or 7100203 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 49.

The square root of 2186856364 is about 46763.8360701942. The cubic root of 2186856364 is about 1297.9961957877.

The spelling of 2186856364 in words is "two billion, one hundred eighty-six million, eight hundred fifty-six thousand, three hundred sixty-four".