1395331663 has 8 divisors (see below), whose sum is σ = 1522454400. Its totient is φ = 1268254680.

The previous prime is 1395331643. The next prime is 1395331703. The reversal of 1395331663 is 3661335931.

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

It is not a de Polignac number, because 1395331663 - 2¹³ = 1395323471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1395331603) 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, 97438 + ... + 110836.

It is an arithmetic number, because the mean of its divisors is an integer number (190306800).

Almost surely, 2^1395331663 is an apocalyptic number.

1395331663 is a deficient number, since it is larger than the sum of its proper divisors (127122737).

1395331663 is a wasteful number, since it uses less digits than its factorization.

1395331663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22877.

The product of its digits is 131220, while the sum is 40.

The square root of 1395331663 is about 37354.1384989669. The cubic root of 1395331663 is about 1117.4441248148. Note that the first 3 decimals are identical.

The spelling of 1395331663 in words is "one billion, three hundred ninety-five million, three hundred thirty-one thousand, six hundred sixty-three".