1388330064 has 80 divisors (see below), whose sum is σ = 4347311040. Its totient is φ = 420704640.

The previous prime is 1388330051. The next prime is 1388330077. The reversal of 1388330064 is 4600338831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1388330051) and next prime (1388330077).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141327 + ... + 150830.

It is an arithmetic number, because the mean of its divisors is an integer number (54341388).

Almost surely, 2^1388330064 is an apocalyptic number.

It is an amenable number.

1388330064 is an abundant number, since it is smaller than the sum of its proper divisors (2958980976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1388330064 is a wasteful number, since it uses less digits than its factorization.

1388330064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292185 (or 292173 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 1388330064 is about 37260.3014480559. The cubic root of 1388330064 is about 1115.5719250790.

Adding to 1388330064 its reverse (4600338831), we get a palindrome (5988668895).

The spelling of 1388330064 in words is "one billion, three hundred eighty-eight million, three hundred thirty thousand, sixty-four".