3781538658 has 48 divisors (see below), whose sum is σ = 8617280256. Its totient is φ = 1196825760.

The previous prime is 3781538653. The next prime is 3781538659. The reversal of 3781538658 is 8568351873.

3781538658 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3781538653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34360 + ... + 93507.

It is an arithmetic number, because the mean of its divisors is an integer number (179526672).

Almost surely, 2^3781538658 is an apocalyptic number.

3781538658 is an abundant number, since it is smaller than the sum of its proper divisors (4835741598).

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

3781538658 is a wasteful number, since it uses less digits than its factorization.

3781538658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127959 (or 127956 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 54.

The square root of 3781538658 is about 61494.2164597615. The cubic root of 3781538658 is about 1557.9595635921.

The spelling of 3781538658 in words is "three billion, seven hundred eighty-one million, five hundred thirty-eight thousand, six hundred fifty-eight".