3656850540 has 96 divisors (see below), whose sum is σ = 11922785280. Its totient is φ = 820075776.

The previous prime is 3656850499. The next prime is 3656850581. The reversal of 3656850540 is 450586563.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3656850499) and next prime (3656850581).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 3656850492 and 3656850501.

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 31 ways as a sum of consecutive naturals, for example, 59880 + ... + 104399.

It is an arithmetic number, because the mean of its divisors is an integer number (124195680).

Almost surely, 2^3656850540 is an apocalyptic number.

3656850540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3656850540 is an abundant number, since it is smaller than the sum of its proper divisors (8265934740).

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

3656850540 is a wasteful number, since it uses less digits than its factorization.

3656850540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164351 (or 164349 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

The square root of 3656850540 is about 60471.8987629792. The cubic root of 3656850540 is about 1540.6443781134.

The spelling of 3656850540 in words is "three billion, six hundred fifty-six million, eight hundred fifty thousand, five hundred forty".