1383745 has 16 divisors (see below), whose sum is σ = 1834560. Its totient is φ = 993600.

The previous prime is 1383743. The next prime is 1383757. The reversal of 1383745 is 5473831.

It is not a de Polignac number, because 1383745 - 2¹ = 1383743 is a prime.

Its product of digits (10080) is a multiple of the sum of its prime divisors (336).

It is not an unprimeable number, because it can be changed into a prime (1383743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7555 + ... + 7735.

It is an arithmetic number, because the mean of its divisors is an integer number (114660).

2^1383745 is an apocalyptic number.

It is an amenable number.

1383745 is a deficient number, since it is larger than the sum of its proper divisors (450815).

1383745 is a wasteful number, since it uses less digits than its factorization.

1383745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336.

The product of its digits is 10080, while the sum is 31.

The square root of 1383745 is about 1176.3269103442. The cubic root of 1383745 is about 111.4342484037.

It can be divided in two parts, 138 and 3745, that added together give a palindrome (3883).

The spelling of 1383745 in words is "one million, three hundred eighty-three thousand, seven hundred forty-five".