3780536646 has 32 divisors (see below), whose sum is σ = 7623561600. Its totient is φ = 1249782336.

The previous prime is 3780536623. The next prime is 3780536663. The reversal of 3780536646 is 6466350873.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3780536595 and 3780536604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1395225 + ... + 1397931.

It is an arithmetic number, because the mean of its divisors is an integer number (238236300).

Almost surely, 2^3780536646 is an apocalyptic number.

3780536646 is an abundant number, since it is smaller than the sum of its proper divisors (3843024954).

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

3780536646 is a wasteful number, since it uses less digits than its factorization.

3780536646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4548.

The product of its (nonzero) digits is 2177280, while the sum is 48.

The square root of 3780536646 is about 61486.0687147910. The cubic root of 3780536646 is about 1557.8219448234.

The spelling of 3780536646 in words is "three billion, seven hundred eighty million, five hundred thirty-six thousand, six hundred forty-six".