1385818 has 24 divisors (see below), whose sum is σ = 2462400. Its totient is φ = 583128.

The previous prime is 1385809. The next prime is 1385827. The reversal of 1385818 is 8185831.

1385818 is nontrivially palindromic in base 6.

It is an interprime number because it is at equal distance from previous prime (1385809) and next prime (1385827).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7653 + ... + 7831.

It is an arithmetic number, because the mean of its divisors is an integer number (102600).

2^1385818 is an apocalyptic number.

1385818 is a deficient number, since it is larger than the sum of its proper divisors (1076582).

1385818 is a wasteful number, since it uses less digits than its factorization.

1385818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 267 counting only the distinct ones).

The product of its digits is 7680, while the sum is 34.

The square root of 1385818 is about 1177.2077131925. The cubic root of 1385818 is about 111.4898674994.

The spelling of 1385818 in words is "one million, three hundred eighty-five thousand, eight hundred eighteen".