1395638 has 4 divisors (see below), whose sum is σ = 2093460. Its totient is φ = 697818.

The previous prime is 1395629. The next prime is 1395643. The reversal of 1395638 is 8365931.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1395598 and 1395607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348908 + ... + 348911.

It is an arithmetic number, because the mean of its divisors is an integer number (523365).

2^1395638 is an apocalyptic number.

1395638 is a deficient number, since it is larger than the sum of its proper divisors (697822).

1395638 is an equidigital number, since it uses as much as digits as its factorization.

1395638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697821.

The product of its digits is 19440, while the sum is 35.

The square root of 1395638 is about 1181.3712371647. The cubic root of 1395638 is about 111.7525894964.

The spelling of 1395638 in words is "one million, three hundred ninety-five thousand, six hundred thirty-eight".