385669718 has 16 divisors (see below), whose sum is σ = 700039584. Its totient is φ = 155564160.

The previous prime is 385669699. The next prime is 385669721. The reversal of 385669718 is 817966583.

It is a happy number.

It is a super-2 number, since 2×385669718² = 297482262764399048, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 385669718.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 809993 + ... + 810468.

It is an arithmetic number, because the mean of its divisors is an integer number (43752474).

Almost surely, 2^385669718 is an apocalyptic number.

385669718 is a deficient number, since it is larger than the sum of its proper divisors (314369866).

385669718 is a wasteful number, since it uses less digits than its factorization.

385669718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620487.

The product of its digits is 2177280, while the sum is 53.

The square root of 385669718 is about 19638.4754499936. The cubic root of 385669718 is about 727.9002134996.

It can be divided in two parts, 38566 and 9718, that added together give a palindrome (48284).

The spelling of 385669718 in words is "three hundred eighty-five million, six hundred sixty-nine thousand, seven hundred eighteen".