3654180816 has 240 divisors, whose sum is σ = 11378313408. Its totient is φ = 996249600.

The previous prime is 3654180793. The next prime is 3654180841. The reversal of 3654180816 is 6180814563.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15162456 + ... + 15162696.

Almost surely, 2^3654180816 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 3654180816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5689156704).

3654180816 is an abundant number, since it is smaller than the sum of its proper divisors (7724132592).

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

3654180816 is a wasteful number, since it uses less digits than its factorization.

3654180816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 3654180816 is about 60449.8206448952. The cubic root of 3654180816 is about 1540.2693653741.

The spelling of 3654180816 in words is "three billion, six hundred fifty-four million, one hundred eighty thousand, eight hundred sixteen".