1383645 has 8 divisors (see below), whose sum is σ = 2213856. Its totient is φ = 737936.

The previous prime is 1383607. The next prime is 1383653. The reversal of 1383645 is 5463831.

1383645 = T₅₅₀ + T₅₅₁ + ... + T₅₅₈.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1383645 - 2⁷ = 1383517 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46107 + ... + 46136.

It is an arithmetic number, because the mean of its divisors is an integer number (276732).

2^1383645 is an apocalyptic number.

1383645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1383645 is a deficient number, since it is larger than the sum of its proper divisors (830211).

1383645 is an equidigital number, since it uses as much as digits as its factorization.

1383645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92251.

The product of its digits is 8640, while the sum is 30.

The square root of 1383645 is about 1176.2844043853. The cubic root of 1383645 is about 111.4315639752.

The spelling of 1383645 in words is "one million, three hundred eighty-three thousand, six hundred forty-five".