1389664853 has 4 divisors (see below), whose sum is σ = 1450085088. Its totient is φ = 1329244620.

The previous prime is 1389664817. The next prime is 1389664867. The reversal of 1389664853 is 3584669831.

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 a cyclic number.

It is not a de Polignac number, because 1389664853 - 2¹⁶ = 1389599317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1389664795 and 1389664804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389664873) 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, 30210083 + ... + 30210128.

It is an arithmetic number, because the mean of its divisors is an integer number (362521272).

Almost surely, 2^1389664853 is an apocalyptic number.

It is an amenable number.

1389664853 is a deficient number, since it is larger than the sum of its proper divisors (60420235).

1389664853 is an equidigital number, since it uses as much as digits as its factorization.

1389664853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60420234.

The product of its digits is 3732480, while the sum is 53.

The square root of 1389664853 is about 37278.2088223133. The cubic root of 1389664853 is about 1115.9293271643.

The spelling of 1389664853 in words is "one billion, three hundred eighty-nine million, six hundred sixty-four thousand, eight hundred fifty-three".