1393116243 has 8 divisors (see below), whose sum is σ = 1860004800. Its totient is φ = 927485928.

The previous prime is 1393116211. The next prime is 1393116251. The reversal of 1393116243 is 3426113931.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1393116243 - 2⁵ = 1393116211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1393116443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311973 + ... + 316406.

It is an arithmetic number, because the mean of its divisors is an integer number (232500600).

Almost surely, 2^1393116243 is an apocalyptic number.

1393116243 is a deficient number, since it is larger than the sum of its proper divisors (466888557).

1393116243 is an equidigital number, since it uses as much as digits as its factorization.

1393116243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629121.

The product of its digits is 11664, while the sum is 33.

The square root of 1393116243 is about 37324.4724410138. The cubic root of 1393116243 is about 1116.8524090026.

The spelling of 1393116243 in words is "one billion, three hundred ninety-three million, one hundred sixteen thousand, two hundred forty-three".