1393233644 has 48 divisors (see below), whose sum is σ = 2714342400. Its totient is φ = 620410560.

The previous prime is 1393233637. The next prime is 1393233697. The reversal of 1393233644 is 4463323931.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1393233598 and 1393233607.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 579557 + ... + 581955.

It is an arithmetic number, because the mean of its divisors is an integer number (56548800).

Almost surely, 2^1393233644 is an apocalyptic number.

It is an amenable number.

1393233644 is a deficient number, since it is larger than the sum of its proper divisors (1321108756).

1393233644 is a wasteful number, since it uses less digits than its factorization.

1393233644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2678 (or 2676 counting only the distinct ones).

The product of its digits is 139968, while the sum is 38.

The square root of 1393233644 is about 37326.0451159777. The cubic root of 1393233644 is about 1116.8837813324.

The spelling of 1393233644 in words is "one billion, three hundred ninety-three million, two hundred thirty-three thousand, six hundred forty-four".