1395768263 has 4 divisors (see below), whose sum is σ = 1395844248. Its totient is φ = 1395692280.

The previous prime is 1395768239. The next prime is 1395768281. The reversal of 1395768263 is 3628675931.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3628675931 = 41 ⋅88504291.

It is a cyclic number.

It is not a de Polignac number, because 1395768263 - 2¹⁶ = 1395702727 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 (1395708263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8645 + ... + 53537.

It is an arithmetic number, because the mean of its divisors is an integer number (348961062).

Almost surely, 2^1395768263 is an apocalyptic number.

1395768263 is a deficient number, since it is larger than the sum of its proper divisors (75985).

1395768263 is an equidigital number, since it uses as much as digits as its factorization.

1395768263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75984.

The product of its digits is 1632960, while the sum is 50.

The square root of 1395768263 is about 37359.9821065268. The cubic root of 1395768263 is about 1117.5606622759.

The spelling of 1395768263 in words is "one billion, three hundred ninety-five million, seven hundred sixty-eight thousand, two hundred sixty-three".