3781569540 has 96 divisors (see below), whose sum is σ = 12114837504. Its totient is φ = 863372160.

The previous prime is 3781569509. The next prime is 3781569559. The reversal of 3781569540 is 459651873.

It is a self number, because there is not a number n which added to its sum of digits gives 3781569540.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 401485 + ... + 410795.

It is an arithmetic number, because the mean of its divisors is an integer number (126196224).

Almost surely, 2^3781569540 is an apocalyptic number.

3781569540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3781569540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6057418752).

3781569540 is an abundant number, since it is smaller than the sum of its proper divisors (8333267964).

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

3781569540 is a wasteful number, since it uses less digits than its factorization.

3781569540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10297 (or 10295 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 48.

The square root of 3781569540 is about 61494.4675560330. The cubic root of 3781569540 is about 1557.9638046150.

The spelling of 3781569540 in words is "three billion, seven hundred eighty-one million, five hundred sixty-nine thousand, five hundred forty".