2385685389 has 4 divisors (see below), whose sum is σ = 3180913856. Its totient is φ = 1590456924.

The previous prime is 2385685381. The next prime is 2385685399. The reversal of 2385685389 is 9835865832.

2385685389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2385685389 - 2³ = 2385685381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2385685381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397614229 + ... + 397614234.

It is an arithmetic number, because the mean of its divisors is an integer number (795228464).

Almost surely, 2^2385685389 is an apocalyptic number.

It is an amenable number.

2385685389 is a deficient number, since it is larger than the sum of its proper divisors (795228467).

2385685389 is an equidigital number, since it uses as much as digits as its factorization.

2385685389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795228466.

The product of its digits is 12441600, while the sum is 57.

The square root of 2385685389 is about 48843.4784694948. The cubic root of 2385685389 is about 1336.1987370115.

The spelling of 2385685389 in words is "two billion, three hundred eighty-five million, six hundred eighty-five thousand, three hundred eighty-nine".