1383631189 has 4 divisors (see below), whose sum is σ = 1383756480. Its totient is φ = 1383505900.

The previous prime is 1383631187. The next prime is 1383631199. The reversal of 1383631189 is 9811363831.

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 1383631189 - 2¹ = 1383631187 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 (1383631181) 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, 44287 + ... + 68764.

It is an arithmetic number, because the mean of its divisors is an integer number (345939120).

Almost surely, 2^1383631189 is an apocalyptic number.

It is an amenable number.

1383631189 is a deficient number, since it is larger than the sum of its proper divisors (125291).

1383631189 is a wasteful number, since it uses less digits than its factorization.

1383631189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125290.

The product of its digits is 93312, while the sum is 43.

The square root of 1383631189 is about 37197.1932946560. The cubic root of 1383631189 is about 1114.3119321866.

The spelling of 1383631189 in words is "one billion, three hundred eighty-three million, six hundred thirty-one thousand, one hundred eighty-nine".