1383668837 has 4 divisors (see below), whose sum is σ = 1385146476. Its totient is φ = 1382191200.

The previous prime is 1383668821. The next prime is 1383668857. The reversal of 1383668837 is 7388663831.

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

It can be written as a sum of positive squares in 2 ways, for example, as 185885956 + 1197782881 = 13634^2 + 34609^2 .

It is a cyclic number.

It is not a de Polignac number, because 1383668837 - 2⁴ = 1383668821 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 (1383668807) 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, 737414 + ... + 739287.

It is an arithmetic number, because the mean of its divisors is an integer number (346286619).

Almost surely, 2^1383668837 is an apocalyptic number.

It is an amenable number.

1383668837 is a deficient number, since it is larger than the sum of its proper divisors (1477639).

1383668837 is an equidigital number, since it uses as much as digits as its factorization.

1383668837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477638.

The product of its digits is 3483648, while the sum is 53.

The square root of 1383668837 is about 37197.6993509007. The cubic root of 1383668837 is about 1114.3220387418.

The spelling of 1383668837 in words is "one billion, three hundred eighty-three million, six hundred sixty-eight thousand, eight hundred thirty-seven".