1381929693 has 4 divisors (see below), whose sum is σ = 1842572928. Its totient is φ = 921286460.

The previous prime is 1381929691. The next prime is 1381929697. The reversal of 1381929693 is 3969291831.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3969291831 = 3 ⋅1323097277.

It is a cyclic number.

It is not a de Polignac number, because 1381929693 - 2¹ = 1381929691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381929691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230321613 + ... + 230321618.

It is an arithmetic number, because the mean of its divisors is an integer number (460643232).

Almost surely, 2^1381929693 is an apocalyptic number.

It is an amenable number.

1381929693 is a deficient number, since it is larger than the sum of its proper divisors (460643235).

1381929693 is an equidigital number, since it uses as much as digits as its factorization.

1381929693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460643234.

The product of its digits is 629856, while the sum is 51.

The square root of 1381929693 is about 37174.3149634260. The cubic root of 1381929693 is about 1113.8549763562.

The spelling of 1381929693 in words is "one billion, three hundred eighty-one million, nine hundred twenty-nine thousand, six hundred ninety-three".