2136219660 has 72 divisors (see below), whose sum is σ = 6861044736. Its totient is φ = 536148480.

The previous prime is 2136219649. The next prime is 2136219697. The reversal of 2136219660 is 669126312.

It is a happy number.

2136219660 is a `hidden beast` number, since 21 + 3 + 621 + 9 + 6 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 345996 + ... + 352115.

It is an arithmetic number, because the mean of its divisors is an integer number (95292288).

Almost surely, 2^2136219660 is an apocalyptic number.

2136219660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2136219660 is an abundant number, since it is smaller than the sum of its proper divisors (4724825076).

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

2136219660 is a wasteful number, since it uses less digits than its factorization.

2136219660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698143 (or 698138 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 2136219660 is about 46219.2563765364. The cubic root of 2136219660 is about 1287.8994840415.

The spelling of 2136219660 in words is "two billion, one hundred thirty-six million, two hundred nineteen thousand, six hundred sixty".