1380165289 has 4 divisors (see below), whose sum is σ = 1393565056. Its totient is φ = 1366765524.

The previous prime is 1380165277. The next prime is 1380165299. The reversal of 1380165289 is 9825610831.

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 1380165289 - 2⁵ = 1380165257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1380165299) 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, 6699729 + ... + 6699934.

It is an arithmetic number, because the mean of its divisors is an integer number (348391264).

Almost surely, 2^1380165289 is an apocalyptic number.

It is an amenable number.

1380165289 is a deficient number, since it is larger than the sum of its proper divisors (13399767).

1380165289 is a wasteful number, since it uses less digits than its factorization.

1380165289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13399766.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 1380165289 is about 37150.5758905565. The cubic root of 1380165289 is about 1113.3807295630.

The spelling of 1380165289 in words is "one billion, three hundred eighty million, one hundred sixty-five thousand, two hundred eighty-nine".