1380189959 has 4 divisors (see below), whose sum is σ = 1380280416. Its totient is φ = 1380099504.

The previous prime is 1380189917. The next prime is 1380189977. The reversal of 1380189959 is 9599810831.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1380189959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1380189959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380185959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16079 + ... + 54944.

It is an arithmetic number, because the mean of its divisors is an integer number (345070104).

Almost surely, 2^1380189959 is an apocalyptic number.

1380189959 is a deficient number, since it is larger than the sum of its proper divisors (90457).

1380189959 is an equidigital number, since it uses as much as digits as its factorization.

1380189959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90456.

The product of its (nonzero) digits is 699840, while the sum is 53.

The square root of 1380189959 is about 37150.9079162273. The cubic root of 1380189959 is about 1113.3873632948.

The spelling of 1380189959 in words is "one billion, three hundred eighty million, one hundred eighty-nine thousand, nine hundred fifty-nine".