6153441985 has 4 divisors (see below), whose sum is σ = 7384130388. Its totient is φ = 4922753584.

The previous prime is 6153441979. The next prime is 6153441989. The reversal of 6153441985 is 5891443516.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4378336561 + 1775105424 = 66169^2 + 42132^2 .

It is a cyclic number.

It is not a de Polignac number, because 6153441985 - 2¹⁹ = 6152917697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6153441989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 615344194 + ... + 615344203.

It is an arithmetic number, because the mean of its divisors is an integer number (1846032597).

Almost surely, 2^6153441985 is an apocalyptic number.

It is an amenable number.

6153441985 is a deficient number, since it is larger than the sum of its proper divisors (1230688403).

6153441985 is a wasteful number, since it uses less digits than its factorization.

6153441985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230688402.

The product of its digits is 518400, while the sum is 46.

The square root of 6153441985 is about 78443.8779319330. The cubic root of 6153441985 is about 1832.4805348498.

The spelling of 6153441985 in words is "six billion, one hundred fifty-three million, four hundred forty-one thousand, nine hundred eighty-five".