3781067440 has 20 divisors (see below), whose sum is σ = 8790981984. Its totient is φ = 1512426944.

The previous prime is 3781067429. The next prime is 3781067447. The reversal of 3781067440 is 447601873.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 3781067393 and 3781067402.

It is not an unprimeable number, because it can be changed into a prime (3781067447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23631592 + ... + 23631751.

Almost surely, 2^3781067440 is an apocalyptic number.

It is an amenable number.

3781067440 is an abundant number, since it is smaller than the sum of its proper divisors (5009914544).

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

3781067440 is a wasteful number, since it uses less digits than its factorization.

3781067440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47263356 (or 47263350 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 3781067440 is about 61490.3849394359. The cubic root of 3781067440 is about 1557.8948483927.

The spelling of 3781067440 in words is "three billion, seven hundred eighty-one million, sixty-seven thousand, four hundred forty".