3665493000 has 480 divisors, whose sum is σ = 14036382360. Its totient is φ = 886982400.

The previous prime is 3665492969. The next prime is 3665493001. The reversal of 3665493000 is 3945663.

It can be written as a sum of positive squares in 4 ways, for example, as 497379204 + 3168113796 = 22302^2 + 56286^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (3665493001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 62126971 + ... + 62127029.

Almost surely, 2^3665493000 is an apocalyptic number.

3665493000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3665493000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7018191180).

3665493000 is an abundant number, since it is smaller than the sum of its proper divisors (10370889360).

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

3665493000 is a wasteful number, since it uses less digits than its factorization.

3665493000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 3665493000 is about 60543.3150727642. The cubic root of 3665493000 is about 1541.8571231303.

The spelling of 3665493000 in words is "three billion, six hundred sixty-five million, four hundred ninety-three thousand".