3553043985 has 24 divisors (see below), whose sum is σ = 6482748480. Its totient is φ = 1795221792.

The previous prime is 3553043957. The next prime is 3553043987. The reversal of 3553043985 is 5893403553.

It is a happy number.

3553043985 is a `hidden beast` number, since 3 + 5 + 530 + 4 + 39 + 85 = 666.

It is not a de Polignac number, because 3553043985 - 2¹³ = 3553035793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 3553043985.

It is not an unprimeable number, because it can be changed into a prime (3553043987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2076949 + ... + 2078658.

It is an arithmetic number, because the mean of its divisors is an integer number (270114520).

Almost surely, 2^3553043985 is an apocalyptic number.

It is an amenable number.

3553043985 is a deficient number, since it is larger than the sum of its proper divisors (2929704495).

3553043985 is a wasteful number, since it uses less digits than its factorization.

3553043985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4155637 (or 4155634 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 45.

The square root of 3553043985 is about 59607.4155202186. The cubic root of 3553043985 is about 1525.9261932620.

The spelling of 3553043985 in words is "three billion, five hundred fifty-three million, forty-three thousand, nine hundred eighty-five".