4172973685 has 4 divisors (see below), whose sum is σ = 5007568428. Its totient is φ = 3338378944.

The previous prime is 4172973641. The next prime is 4172973689. The reversal of 4172973685 is 5863792714.

4172973685 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 688905009 + 3484068676 = 26247^2 + 59026^2 .

It is a cyclic number.

It is not a de Polignac number, because 4172973685 - 2¹⁹ = 4172449397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4172973689) 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, 417297364 + ... + 417297373.

It is an arithmetic number, because the mean of its divisors is an integer number (1251892107).

Almost surely, 2^4172973685 is an apocalyptic number.

It is an amenable number.

4172973685 is a deficient number, since it is larger than the sum of its proper divisors (834594743).

4172973685 is an equidigital number, since it uses as much as digits as its factorization.

4172973685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834594742.

The product of its digits is 2540160, while the sum is 52.

The square root of 4172973685 is about 64598.5579173405. The cubic root of 4172973685 is about 1609.9604795926.

The spelling of 4172973685 in words is "four billion, one hundred seventy-two million, nine hundred seventy-three thousand, six hundred eighty-five".