1388573 has 4 divisors (see below), whose sum is σ = 1426140. Its totient is φ = 1351008.

The previous prime is 1388483. The next prime is 1388587. The reversal of 1388573 is 3758831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3758831 = 59 ⋅63709.

It can be written as a sum of positive squares in 2 ways, for example, as 582169 + 806404 = 763^2 + 898^2 .

It is a cyclic number.

It is not a de Polignac number, because 1388573 - 2¹² = 1384477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388593) 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, 18728 + ... + 18801.

It is an arithmetic number, because the mean of its divisors is an integer number (356535).

2^1388573 is an apocalyptic number.

It is an amenable number.

1388573 is a deficient number, since it is larger than the sum of its proper divisors (37567).

1388573 is an equidigital number, since it uses as much as digits as its factorization.

1388573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37566.

The product of its digits is 20160, while the sum is 35.

The square root of 1388573 is about 1178.3772740511. The cubic root of 1388573 is about 111.5636990484.

The spelling of 1388573 in words is "one million, three hundred eighty-eight thousand, five hundred seventy-three".