3694218388 has 96 divisors (see below), whose sum is σ = 8043840000. Its totient is φ = 1478711808.

The previous prime is 3694218373. The next prime is 3694218391. The reversal of 3694218388 is 8838124963.

It is a congruent number.

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, 3474745 + ... + 3475807.

It is an arithmetic number, because the mean of its divisors is an integer number (83790000).

Almost surely, 2^3694218388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3694218388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4021920000).

3694218388 is an abundant number, since it is smaller than the sum of its proper divisors (4349621612).

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

3694218388 is a wasteful number, since it uses less digits than its factorization.

3694218388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254 (or 1238 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 52.

The square root of 3694218388 is about 60780.0821651304. The cubic root of 3694218388 is about 1545.8743406550.

The spelling of 3694218388 in words is "three billion, six hundred ninety-four million, two hundred eighteen thousand, three hundred eighty-eight".