3651866900 has 144 divisors (see below), whose sum is σ = 9195161472. Its totient is φ = 1244160000.

The previous prime is 3651866873. The next prime is 3651866903. The reversal of 3651866900 is 96681563.

It is a super-2 number, since 2×3651866900² = 26672263710631220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3651866903) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7498457 + ... + 7498943.

It is an arithmetic number, because the mean of its divisors is an integer number (63855288).

Almost surely, 2^3651866900 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 3651866900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4597580736).

3651866900 is an abundant number, since it is smaller than the sum of its proper divisors (5543294572).

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

3651866900 is a wasteful number, since it uses less digits than its factorization.

3651866900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930 (or 923 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 3651866900 is about 60430.6784671494. The cubic root of 3651866900 is about 1539.9441847427.

The spelling of 3651866900 in words is "three billion, six hundred fifty-one million, eight hundred sixty-six thousand, nine hundred".