1384597685 has 8 divisors (see below), whose sum is σ = 1662855000. Its totient is φ = 1106786304.

The previous prime is 1384597681. The next prime is 1384597693. The reversal of 1384597685 is 5867954831.

It can be written as a sum of positive squares in 4 ways, for example, as 161976529 + 1222621156 = 12727^2 + 34966^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1384597685 - 2² = 1384597681 is a prime.

It is a super-2 number, since 2×1384597685² = 3834221498614718450, 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 1384597685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1384597681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104612 + ... + 117101.

It is an arithmetic number, because the mean of its divisors is an integer number (207856875).

Almost surely, 2^1384597685 is an apocalyptic number.

It is an amenable number.

1384597685 is a deficient number, since it is larger than the sum of its proper divisors (278257315).

1384597685 is a wasteful number, since it uses less digits than its factorization.

1384597685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222967.

The product of its digits is 7257600, while the sum is 56.

The square root of 1384597685 is about 37210.1825445670. The cubic root of 1384597685 is about 1114.5713287095.

The spelling of 1384597685 in words is "one billion, three hundred eighty-four million, five hundred ninety-seven thousand, six hundred eighty-five".