385553913 has 16 divisors (see below), whose sum is σ = 531181056. Its totient is φ = 248497920.

The previous prime is 385553893. The next prime is 385553921. The reversal of 385553913 is 319355583.

It is not a de Polignac number, because 385553913 - 2¹⁷ = 385422841 is a prime.

It is a super-2 number, since 2×385553913² = 297303639659223138, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (385553933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164095 + ... + 166427.

It is an arithmetic number, because the mean of its divisors is an integer number (33198816).

Almost surely, 2^385553913 is an apocalyptic number.

It is an amenable number.

385553913 is a deficient number, since it is larger than the sum of its proper divisors (145627143).

385553913 is a wasteful number, since it uses less digits than its factorization.

385553913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4144.

The product of its digits is 243000, while the sum is 42.

The square root of 385553913 is about 19635.5268072950. The cubic root of 385553913 is about 727.8273507030.

The spelling of 385553913 in words is "three hundred eighty-five million, five hundred fifty-three thousand, nine hundred thirteen".