1395203623 has 4 divisors (see below), whose sum is σ = 1522040328. Its totient is φ = 1268366920.

The previous prime is 1395203603. The next prime is 1395203633. The reversal of 1395203623 is 3263025931.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1395203623 is a prime.

It is a super-2 number, since 2×1395203623² = 3893186299264652258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1395203603) 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, 63418336 + ... + 63418357.

It is an arithmetic number, because the mean of its divisors is an integer number (380510082).

Almost surely, 2^1395203623 is an apocalyptic number.

1395203623 is a deficient number, since it is larger than the sum of its proper divisors (126836705).

1395203623 is a wasteful number, since it uses less digits than its factorization.

1395203623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126836704.

The product of its (nonzero) digits is 29160, while the sum is 34.

The square root of 1395203623 is about 37352.4245933246. The cubic root of 1395203623 is about 1117.4099437126.

The spelling of 1395203623 in words is "one billion, three hundred ninety-five million, two hundred three thousand, six hundred twenty-three".