3648785946 has 64 divisors (see below), whose sum is σ = 7951577088. Its totient is φ = 1109541888.

The previous prime is 3648785923. The next prime is 3648785953. The reversal of 3648785946 is 6495878463.

3648785946 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3648785946² = 26627277759454229832, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3648785946.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3337776 + ... + 3338868.

It is an arithmetic number, because the mean of its divisors is an integer number (124243392).

Almost surely, 2^3648785946 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3648785946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3975788544).

3648785946 is an abundant number, since it is smaller than the sum of its proper divisors (4302791142).

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

3648785946 is a wasteful number, since it uses less digits than its factorization.

3648785946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575.

The product of its digits is 34836480, while the sum is 60.

The square root of 3648785946 is about 60405.1814499385. The cubic root of 3648785946 is about 1539.5109969872.

The spelling of 3648785946 in words is "three billion, six hundred forty-eight million, seven hundred eighty-five thousand, nine hundred forty-six".