385345460644 has 27 divisors (see below), whose sum is σ = 678026625003. Its totient is φ = 191629229400.

The previous prime is 385345460597. The next prime is 385345460677. The reversal of 385345460644 is 446064543583.

The square root of 385345460644 is 620762.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×385345460644² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 385345460591 and 385345460600.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 261960829 + ... + 261962299.

Almost surely, 2^385345460644 is an apocalyptic number.

385345460644 is the 620762-nd square number.

It is an amenable number.

385345460644 is a deficient number, since it is larger than the sum of its proper divisors (292681164359).

385345460644 is an frugal number, since it uses more digits than its factorization.

385345460644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3368 (or 1684 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 52.

The spelling of 385345460644 in words is "three hundred eighty-five billion, three hundred forty-five million, four hundred sixty thousand, six hundred forty-four".