1395778 has 16 divisors (see below), whose sum is σ = 2301120. Its totient is φ = 632016.

The previous prime is 1395773. The next prime is 1395781. The reversal of 1395778 is 8775931.

It is a self number, because there is not a number n which added to its sum of digits gives 1395778.

It is not an unprimeable number, because it can be changed into a prime (1395773) 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, 76 + ... + 1672.

It is an arithmetic number, because the mean of its divisors is an integer number (143820).

2^1395778 is an apocalyptic number.

1395778 is a deficient number, since it is larger than the sum of its proper divisors (905342).

1395778 is a wasteful number, since it uses less digits than its factorization.

1395778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641.

The product of its digits is 52920, while the sum is 40.

The square root of 1395778 is about 1181.4304888566. The cubic root of 1395778 is about 111.7563261003.

The spelling of 1395778 in words is "one million, three hundred ninety-five thousand, seven hundred seventy-eight".