1381433693 has 4 divisors (see below), whose sum is σ = 1381757280. Its totient is φ = 1381110108.

The previous prime is 1381433621. The next prime is 1381433717. The reversal of 1381433693 is 3963341831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1381433693 - 2¹⁰ = 1381432669 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1381433693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381439693) 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, 155303 + ... + 163956.

It is an arithmetic number, because the mean of its divisors is an integer number (345439320).

Almost surely, 2^1381433693 is an apocalyptic number.

It is an amenable number.

1381433693 is a deficient number, since it is larger than the sum of its proper divisors (323587).

1381433693 is an equidigital number, since it uses as much as digits as its factorization.

1381433693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323586.

The product of its digits is 139968, while the sum is 41.

The square root of 1381433693 is about 37167.6430918077. The cubic root of 1381433693 is about 1113.7216993929.

The spelling of 1381433693 in words is "one billion, three hundred eighty-one million, four hundred thirty-three thousand, six hundred ninety-three".