2106742648 has 32 divisors (see below), whose sum is σ = 4181328000. Its totient is φ = 992342880.

The previous prime is 2106742643. The next prime is 2106742657. The reversal of 2106742648 is 8462476012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2106742648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106742643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11508 + ... + 65923.

It is an arithmetic number, because the mean of its divisors is an integer number (130666500).

Almost surely, 2^2106742648 is an apocalyptic number.

It is an amenable number.

2106742648 is a deficient number, since it is larger than the sum of its proper divisors (2074585352).

2106742648 is a wasteful number, since it uses less digits than its factorization.

2106742648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77635 (or 77631 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 2106742648 is about 45899.2663122190. The cubic root of 2106742648 is about 1281.9482554362.

The spelling of 2106742648 in words is "two billion, one hundred six million, seven hundred forty-two thousand, six hundred forty-eight".