2102953640 has 16 divisors (see below), whose sum is σ = 4731645780. Its totient is φ = 841181440.

The previous prime is 2102953639. The next prime is 2102953661. The reversal of 2102953640 is 463592012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2074073764 + 28879876 = 45542^2 + 5374^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2102953597 and 2102953606.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26286881 + ... + 26286960.

Almost surely, 2^2102953640 is an apocalyptic number.

2102953640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102953640 is an abundant number, since it is smaller than the sum of its proper divisors (2628692140).

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

2102953640 is a wasteful number, since it uses less digits than its factorization.

2102953640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52573852 (or 52573848 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 2102953640 is about 45857.9724802569. The cubic root of 2102953640 is about 1281.1792598977.

The spelling of 2102953640 in words is "two billion, one hundred two million, nine hundred fifty-three thousand, six hundred forty".