3706228649538 has 96 divisors (see below), whose sum is σ = 8091284078592. Its totient is φ = 1226052223200.

The previous prime is 3706228649531. The next prime is 3706228649579. The reversal of 3706228649538 is 8359468226073.

It is a happy number.

3706228649538 is a `hidden beast` number, since 3 + 7 + 0 + 62 + 2 + 86 + 495 + 3 + 8 = 666.

It is a super-2 number, since 2×3706228649538² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3706228649531) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2033037295 + ... + 2033039117.

It is an arithmetic number, because the mean of its divisors is an integer number (84284209152).

Almost surely, 2^{3706228649538} is an apocalyptic number.

3706228649538 is an abundant number, since it is smaller than the sum of its proper divisors (4385055429054).

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

3706228649538 is a wasteful number, since it uses less digits than its factorization.

3706228649538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3500 (or 3497 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 63.

The spelling of 3706228649538 in words is "three trillion, seven hundred six billion, two hundred twenty-eight million, six hundred forty-nine thousand, five hundred thirty-eight".