1395828009 has 12 divisors (see below), whose sum is σ = 2016592500. Its totient is φ = 930369024.

The previous prime is 1395827999. The next prime is 1395828013. The reversal of 1395828009 is 9008285931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1092963600 + 302864409 = 33060^2 + 17403^2 .

It is not a de Polignac number, because 1395828009 - 2¹¹ = 1395825961 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1395828019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46017 + ... + 70065.

It is an arithmetic number, because the mean of its divisors is an integer number (168049375).

Almost surely, 2^1395828009 is an apocalyptic number.

It is an amenable number.

1395828009 is a deficient number, since it is larger than the sum of its proper divisors (620764491).

1395828009 is a wasteful number, since it uses less digits than its factorization.

1395828009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30504 (or 30501 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 1395828009 is about 37360.7816968543. The cubic root of 1395828009 is about 1117.5766078137.

The spelling of 1395828009 in words is "one billion, three hundred ninety-five million, eight hundred twenty-eight thousand, nine".