2185276464 has 60 divisors (see below), whose sum is σ = 6989419216. Its totient is φ = 624364416.

The previous prime is 2185276453. The next prime is 2185276493. The reversal of 2185276464 is 4646725812.

2185276464 is a `hidden beast` number, since 2 + 1 + 8 + 527 + 64 + 64 = 666.

It is a super-2 number, since 2×2185276464² = 9550866448224686592, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1082959 + ... + 1084974.

Almost surely, 2^2185276464 is an apocalyptic number.

2185276464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2185276464 is an abundant number, since it is smaller than the sum of its proper divisors (4804142752).

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

2185276464 is a wasteful number, since it uses less digits than its factorization.

2185276464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2167954 (or 2167945 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 2185276464 is about 46746.9406913436. The cubic root of 2185276464 is about 1297.6835402536.

The spelling of 2185276464 in words is "two billion, one hundred eighty-five million, two hundred seventy-six thousand, four hundred sixty-four".