2186532240 has 40 divisors (see below), whose sum is σ = 6778250688. Its totient is φ = 583075200.

The previous prime is 2186532233. The next prime is 2186532247. The reversal of 2186532240 is 422356812.

It is an interprime number because it is at equal distance from previous prime (2186532233) and next prime (2186532247).

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (2186532247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4555036 + ... + 4555515.

Almost surely, 2^2186532240 is an apocalyptic number.

2186532240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2186532240 is an abundant number, since it is smaller than the sum of its proper divisors (4591718448).

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

2186532240 is a wasteful number, since it uses less digits than its factorization.

2186532240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9110567 (or 9110561 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 2186532240 is about 46760.3704005860. The cubic root of 2186532240 is about 1297.9320652984.

The spelling of 2186532240 in words is "two billion, one hundred eighty-six million, five hundred thirty-two thousand, two hundred forty".