1388713642 has 16 divisors (see below), whose sum is σ = 2174522112. Its totient is φ = 663897520.

The previous prime is 1388713609. The next prime is 1388713643. The reversal of 1388713642 is 2463178831.

It is not an unprimeable number, because it can be changed into a prime (1388713643) 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, 152292 + ... + 161152.

It is an arithmetic number, because the mean of its divisors is an integer number (135907632).

Almost surely, 2^1388713642 is an apocalyptic number.

1388713642 is a deficient number, since it is larger than the sum of its proper divisors (785808470).

1388713642 is a wasteful number, since it uses less digits than its factorization.

1388713642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12293.

The product of its digits is 193536, while the sum is 43.

The square root of 1388713642 is about 37265.4483670866. The cubic root of 1388713642 is about 1115.6746550797.

The spelling of 1388713642 in words is "one billion, three hundred eighty-eight million, seven hundred thirteen thousand, six hundred forty-two".