3669493840 has 20 divisors (see below), whose sum is σ = 8531573364. Its totient is φ = 1467797504.

The previous prime is 3669493837. The next prime is 3669493871. The reversal of 3669493840 is 483949663.

It can be written as a sum of positive squares in 2 ways, for example, as 1976335936 + 1693157904 = 44456^2 + 41148^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22934257 + ... + 22934416.

Almost surely, 2^3669493840 is an apocalyptic number.

It is an amenable number.

3669493840 is an abundant number, since it is smaller than the sum of its proper divisors (4862079524).

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

3669493840 is a wasteful number, since it uses less digits than its factorization.

3669493840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45868686 (or 45868680 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 52.

The square root of 3669493840 is about 60576.3471992163. The cubic root of 3669493840 is about 1542.4178917774.

The spelling of 3669493840 in words is "three billion, six hundred sixty-nine million, four hundred ninety-three thousand, eight hundred forty".