385253653 has 4 divisors (see below), whose sum is σ = 385305868. Its totient is φ = 385201440.

The previous prime is 385253629. The next prime is 385253723. The reversal of 385253653 is 356352583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 356352583 = 1723 ⋅206821.

It can be written as a sum of positive squares in 2 ways, for example, as 198302724 + 186950929 = 14082^2 + 13673^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385253653 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 (385251653) 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, 12768 + ... + 30553.

It is an arithmetic number, because the mean of its divisors is an integer number (96326467).

Almost surely, 2^385253653 is an apocalyptic number.

It is an amenable number.

385253653 is a deficient number, since it is larger than the sum of its proper divisors (52215).

385253653 is an equidigital number, since it uses as much as digits as its factorization.

385253653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52214.

The product of its digits is 324000, while the sum is 40.

The square root of 385253653 is about 19627.8794830211. The cubic root of 385253653 is about 727.6383635618.

The spelling of 385253653 in words is "three hundred eighty-five million, two hundred fifty-three thousand, six hundred fifty-three".