1906755648 has 112 divisors (see below), whose sum is σ = 5811585024. Its totient is φ = 540449280.

The previous prime is 1906755647. The next prime is 1906755661. The reversal of 1906755648 is 8465576091.

It is a tau number, because it is divible by the number of its divisors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 1906755648.

It is not an unprimeable number, because it can be changed into a prime (1906755647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165103 + ... + 176273.

It is an arithmetic number, because the mean of its divisors is an integer number (51889152).

Almost surely, 2^1906755648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1906755648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2905792512).

1906755648 is an abundant number, since it is smaller than the sum of its proper divisors (3904829376).

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

1906755648 is a wasteful number, since it uses less digits than its factorization.

1906755648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11320 (or 11310 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 51.

The square root of 1906755648 is about 43666.4132715294. The cubic root of 1906755648 is about 1240.0285390587.

The spelling of 1906755648 in words is "one billion, nine hundred six million, seven hundred fifty-five thousand, six hundred forty-eight".