3881720475 has 60 divisors (see below), whose sum is σ = 7214163264. Its totient is φ = 2063378880.

The previous prime is 3881720473. The next prime is 3881720503. The reversal of 3881720475 is 5740271883.

3881720475 is a `hidden beast` number, since 3 + 8 + 8 + 172 + 0 + 475 = 666.

It is not a de Polignac number, because 3881720475 - 2¹ = 3881720473 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 3881720475.

It is not an unprimeable number, because it can be changed into a prime (3881720473) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 638902 + ... + 644948.

Almost surely, 2^3881720475 is an apocalyptic number.

3881720475 is a deficient number, since it is larger than the sum of its proper divisors (3332442789).

3881720475 is a wasteful number, since it uses less digits than its factorization.

3881720475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6386 (or 6372 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 3881720475 is about 62303.4547597483. The cubic root of 3881720475 is about 1571.5978262892.

The spelling of 3881720475 in words is "three billion, eight hundred eighty-one million, seven hundred twenty thousand, four hundred seventy-five".