3557638216 has 16 divisors (see below), whose sum is σ = 7276987440. Its totient is φ = 1617108240.

The previous prime is 3557638199. The next prime is 3557638219. The reversal of 3557638216 is 6128367553.

It is not an unprimeable number, because it can be changed into a prime (3557638219) 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, 20213766 + ... + 20213941.

It is an arithmetic number, because the mean of its divisors is an integer number (454811715).

Almost surely, 2^3557638216 is an apocalyptic number.

It is an amenable number.

3557638216 is an abundant number, since it is smaller than the sum of its proper divisors (3719349224).

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

3557638216 is a wasteful number, since it uses less digits than its factorization.

3557638216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40427724 (or 40427720 counting only the distinct ones).

The product of its digits is 907200, while the sum is 46.

The square root of 3557638216 is about 59645.9404821485. The cubic root of 3557638216 is about 1526.5836049553.

The spelling of 3557638216 in words is "three billion, five hundred fifty-seven million, six hundred thirty-eight thousand, two hundred sixteen".