1380737 has 4 divisors (see below), whose sum is σ = 1400256. Its totient is φ = 1361220.

The previous prime is 1380727. The next prime is 1380763. The reversal of 1380737 is 7370831.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7370831 = 13 ⋅566987.

It is a cyclic number.

It is not a de Polignac number, because 1380737 - 2⁴ = 1380721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1380707) 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 in 3 ways as a sum of consecutive naturals, for example, 9653 + ... + 9794.

It is an arithmetic number, because the mean of its divisors is an integer number (350064).

2^1380737 is an apocalyptic number.

It is an amenable number.

1380737 is a deficient number, since it is larger than the sum of its proper divisors (19519).

1380737 is an equidigital number, since it uses as much as digits as its factorization.

1380737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19518.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 1380737 is about 1175.0476586079. The cubic root of 1380737 is about 111.3534441621.

The spelling of 1380737 in words is "one million, three hundred eighty thousand, seven hundred thirty-seven".