1378422589 has 4 divisors (see below), whose sum is σ = 1379308320. Its totient is φ = 1377536860.

The previous prime is 1378422581. The next prime is 1378422599. The reversal of 1378422589 is 9852248731.

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 1378422589 - 2³ = 1378422581 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378422581) 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, 440527 + ... + 443644.

It is an arithmetic number, because the mean of its divisors is an integer number (344827080).

Almost surely, 2^1378422589 is an apocalyptic number.

It is an amenable number.

1378422589 is a deficient number, since it is larger than the sum of its proper divisors (885731).

1378422589 is an equidigital number, since it uses as much as digits as its factorization.

1378422589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885730.

The product of its digits is 967680, while the sum is 49.

The square root of 1378422589 is about 37127.1139330813. The cubic root of 1378422589 is about 1112.9119195740.

The spelling of 1378422589 in words is "one billion, three hundred seventy-eight million, four hundred twenty-two thousand, five hundred eighty-nine".