3455781648 has 160 divisors (see below), whose sum is σ = 10438474752. Its totient is φ = 974476800.

The previous prime is 3455781587. The next prime is 3455781649. The reversal of 3455781648 is 8461875543.

3455781648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 3455781648.

It is not an unprimeable number, because it can be changed into a prime (3455781649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 445483 + ... + 453173.

Almost surely, 2^3455781648 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 3455781648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5219237376).

3455781648 is an abundant number, since it is smaller than the sum of its proper divisors (6982693104).

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

3455781648 is a wasteful number, since it uses less digits than its factorization.

3455781648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7773 (or 7767 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 51.

The square root of 3455781648 is about 58785.8966759885. The cubic root of 3455781648 is about 1511.8734181985.

The spelling of 3455781648 in words is "three billion, four hundred fifty-five million, seven hundred eighty-one thousand, six hundred forty-eight".