385968781 has 8 divisors (see below), whose sum is σ = 422914464. Its totient is φ = 349332720.

The previous prime is 385968767. The next prime is 385968787. The reversal of 385968781 is 187869583.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 385968781 - 2⁵ = 385968749 is a prime.

It is a super-2 number, since 2×385968781² = 297943799813251922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385968787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74790 + ... + 79783.

It is an arithmetic number, because the mean of its divisors is an integer number (52864308).

Almost surely, 2^385968781 is an apocalyptic number.

It is an amenable number.

385968781 is a deficient number, since it is larger than the sum of its proper divisors (36945683).

385968781 is a wasteful number, since it uses less digits than its factorization.

385968781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154811.

The product of its digits is 2903040, while the sum is 55.

The square root of 385968781 is about 19646.0881856923. The cubic root of 385968781 is about 728.0883120788.

The spelling of 385968781 in words is "three hundred eighty-five million, nine hundred sixty-eight thousand, seven hundred eighty-one".