3613091664 has 160 divisors (see below), whose sum is σ = 11858796544. Its totient is φ = 922129920.

The previous prime is 3613091659. The next prime is 3613091789. The reversal of 3613091664 is 4661903163.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 122067 + ... + 148749.

Almost surely, 2^3613091664 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 3613091664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5929398272).

3613091664 is an abundant number, since it is smaller than the sum of its proper divisors (8245704880).

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

3613091664 is a wasteful number, since it uses less digits than its factorization.

3613091664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26745 (or 26739 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 3613091664 is about 60108.9981949458. The cubic root of 3613091664 is about 1534.4744442492.

The spelling of 3613091664 in words is "three billion, six hundred thirteen million, ninety-one thousand, six hundred sixty-four".