1381395 has 32 divisors (see below), whose sum is σ = 2407680. Its totient is φ = 673920.

The previous prime is 1381381. The next prime is 1381397. The reversal of 1381395 is 5931831.

It is a happy number.

It is not a de Polignac number, because 1381395 - 2¹⁴ = 1365011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1381397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10480 + ... + 10610.

It is an arithmetic number, because the mean of its divisors is an integer number (75240).

2^1381395 is an apocalyptic number.

1381395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1381395 is a deficient number, since it is larger than the sum of its proper divisors (1026285).

1381395 is a wasteful number, since it uses less digits than its factorization.

1381395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195.

The product of its digits is 3240, while the sum is 30.

The square root of 1381395 is about 1175.3276139018. The cubic root of 1381395 is about 111.3711301105.

It can be divided in two parts, 138 and 1395, that multiplied together give a triangular number (192510 = T₆₂₀).

The spelling of 1381395 in words is "one million, three hundred eighty-one thousand, three hundred ninety-five".