3916395720 has 48 divisors (see below), whose sum is σ = 12728287260. Its totient is φ = 1044372096.

The previous prime is 3916395719. The next prime is 3916395731. The reversal of 3916395720 is 275936193.

3916395720 is a `hidden beast` number, since 3 + 9 + 1 + 639 + 5 + 7 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3881040804 + 35354916 = 62298^2 + 5946^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5439079 + ... + 5439798.

Almost surely, 2^3916395720 is an apocalyptic number.

3916395720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3916395720 is an abundant number, since it is smaller than the sum of its proper divisors (8811891540).

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

3916395720 is a wasteful number, since it uses less digits than its factorization.

3916395720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10878894 (or 10878887 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 45.

The square root of 3916395720 is about 62581.1131252872. The cubic root of 3916395720 is about 1576.2636329222.

The spelling of 3916395720 in words is "three billion, nine hundred sixteen million, three hundred ninety-five thousand, seven hundred twenty".