1388881713 has 8 divisors (see below), whose sum is σ = 1859048928. Its totient is φ = 922317824.

The previous prime is 1388881673. The next prime is 1388881723. The reversal of 1388881713 is 3171888831.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1388881713 - 2⁶ = 1388881649 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1388881723) 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, 899931 + ... + 901472.

It is an arithmetic number, because the mean of its divisors is an integer number (232381116).

Almost surely, 2^1388881713 is an apocalyptic number.

It is an amenable number.

1388881713 is a deficient number, since it is larger than the sum of its proper divisors (470167215).

1388881713 is a wasteful number, since it uses less digits than its factorization.

1388881713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801663.

The product of its digits is 258048, while the sum is 48.

The square root of 1388881713 is about 37267.7033502200. The cubic root of 1388881713 is about 1115.7196619564.

The spelling of 1388881713 in words is "one billion, three hundred eighty-eight million, eight hundred eighty-one thousand, seven hundred thirteen".