3648785945 has 16 divisors (see below), whose sum is σ = 5176604160. Its totient is φ = 2415747264.

The previous prime is 3648785923. The next prime is 3648785953. The reversal of 3648785945 is 5495878463.

3648785945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-3648785945 is a prime.

It is a Curzon 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, 1796417 + ... + 1798446.

It is an arithmetic number, because the mean of its divisors is an integer number (323537760).

Almost surely, 2^3648785945 is an apocalyptic number.

3648785945 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3648785945 is a deficient number, since it is larger than the sum of its proper divisors (1527818215).

3648785945 is a wasteful number, since it uses less digits than its factorization.

3648785945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594904.

The product of its digits is 29030400, while the sum is 59.

The square root of 3648785945 is about 60405.1814416611. The cubic root of 3648785945 is about 1539.5109968465.

The spelling of 3648785945 in words is "three billion, six hundred forty-eight million, seven hundred eighty-five thousand, nine hundred forty-five".