1393734663 has 12 divisors (see below), whose sum is σ = 2056006368. Its totient is φ = 909386880.

The previous prime is 1393734659. The next prime is 1393734677. The reversal of 1393734663 is 3664373931.

It is not a de Polignac number, because 1393734663 - 2² = 1393734659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393734763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1647018 + ... + 1647863.

It is an arithmetic number, because the mean of its divisors is an integer number (171333864).

Almost surely, 2^1393734663 is an apocalyptic number.

1393734663 is a deficient number, since it is larger than the sum of its proper divisors (662271705).

1393734663 is a wasteful number, since it uses less digits than its factorization.

1393734663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3294934 (or 3294931 counting only the distinct ones).

The product of its digits is 734832, while the sum is 45.

The square root of 1393734663 is about 37332.7558988082. The cubic root of 1393734663 is about 1117.0176456784.

The spelling of 1393734663 in words is "one billion, three hundred ninety-three million, seven hundred thirty-four thousand, six hundred sixty-three".