1381893 has 8 divisors (see below), whose sum is σ = 1848000. Its totient is φ = 918528.

The previous prime is 1381883. The next prime is 1381901. The reversal of 1381893 is 3981831.

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

It is not a de Polignac number, because 1381893 - 2⁸ = 1381637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1413 + ... + 2181.

It is an arithmetic number, because the mean of its divisors is an integer number (231000).

2^1381893 is an apocalyptic number.

It is an amenable number.

1381893 is a deficient number, since it is larger than the sum of its proper divisors (466107).

1381893 is an equidigital number, since it uses as much as digits as its factorization.

1381893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371.

The product of its digits is 5184, while the sum is 33.

The square root of 1381893 is about 1175.5394506353. The cubic root of 1381893 is about 111.3845117909.

The spelling of 1381893 in words is "one million, three hundred eighty-one thousand, eight hundred ninety-three".