1388049696 has 240 divisors, whose sum is σ = 4511596320. Its totient is φ = 415134720.

The previous prime is 1388049673. The next prime is 1388049721. The reversal of 1388049696 is 6969408831.

1388049696 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2537295 + ... + 2537841.

It is an arithmetic number, because the mean of its divisors is an integer number (18798318).

Almost surely, 2^1388049696 is an apocalyptic number.

1388049696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1388049696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2255798160).

1388049696 is an abundant number, since it is smaller than the sum of its proper divisors (3123546624).

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

1388049696 is a wasteful number, since it uses less digits than its factorization.

1388049696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The square root of 1388049696 is about 37256.5389696896. The cubic root of 1388049696 is about 1115.4968248479.

The spelling of 1388049696 in words is "one billion, three hundred eighty-eight million, forty-nine thousand, six hundred ninety-six".