1380611 has 2 divisors, whose sum is σ = 1380612. Its totient is φ = 1380610.

The previous prime is 1380607. The next prime is 1380619. The reversal of 1380611 is 1160831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1380611 - 2² = 1380607 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1380619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690305 + 690306.

It is an arithmetic number, because the mean of its divisors is an integer number (690306).

2^1380611 is an apocalyptic number.

1380611 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380611 is an equidigital number, since it uses as much as digits as its factorization.

1380611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1380611 is about 1174.9940425381. The cubic root of 1380611 is about 111.3500568501.

It can be divided in two parts, 1380 and 611, that added together give a palindrome (1991).

The spelling of 1380611 in words is "one million, three hundred eighty thousand, six hundred eleven".