1393857814 has 8 divisors (see below), whose sum is σ = 2139409800. Its totient is φ = 680721216.

The previous prime is 1393857811. The next prime is 1393857823. The reversal of 1393857814 is 4187583931.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393857811) 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 3 ways as a sum of consecutive naturals, for example, 8103739 + ... + 8103910.

It is an arithmetic number, because the mean of its divisors is an integer number (267426225).

Almost surely, 2^1393857814 is an apocalyptic number.

1393857814 is a deficient number, since it is larger than the sum of its proper divisors (745551986).

1393857814 is a wasteful number, since it uses less digits than its factorization.

1393857814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16207694.

The product of its digits is 725760, while the sum is 49.

The square root of 1393857814 is about 37334.4052316359. The cubic root of 1393857814 is about 1117.0505447642.

The spelling of 1393857814 in words is "one billion, three hundred ninety-three million, eight hundred fifty-seven thousand, eight hundred fourteen".