3655951020 has 72 divisors (see below), whose sum is σ = 11095025760. Its totient is φ = 974453760.

The previous prime is 3655951001. The next prime is 3655951027. The reversal of 3655951020 is 201595563.

3655951020 is a `hidden beast` number, since 3 + 65 + 595 + 1 + 0 + 2 + 0 = 666.

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 (3655951027) 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 23 ways as a sum of consecutive naturals, for example, 544041 + ... + 550719.

It is an arithmetic number, because the mean of its divisors is an integer number (154097580).

Almost surely, 2^3655951020 is an apocalyptic number.

3655951020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3655951020 is an abundant number, since it is smaller than the sum of its proper divisors (7439074740).

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

3655951020 is a wasteful number, since it uses less digits than its factorization.

3655951020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9735 (or 9730 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 36.

The square root of 3655951020 is about 60464.4608013666. The cubic root of 3655951020 is about 1540.5180440762.

The spelling of 3655951020 in words is "three billion, six hundred fifty-five million, nine hundred fifty-one thousand, twenty".