1388744796 has 24 divisors (see below), whose sum is σ = 3301545744. Its totient is φ = 454180480.

The previous prime is 1388744759. The next prime is 1388744809. The reversal of 1388744796 is 6974478831.

It is a super-2 number, since 2×1388744796² = 3857224216834163232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1091145 + ... + 1092416.

It is an arithmetic number, because the mean of its divisors is an integer number (137564406).

Almost surely, 2^1388744796 is an apocalyptic number.

It is an amenable number.

1388744796 is an abundant number, since it is smaller than the sum of its proper divisors (1912800948).

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

1388744796 is a wasteful number, since it uses less digits than its factorization.

1388744796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183621 (or 2183619 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 57.

The square root of 1388744796 is about 37265.8663658850. The cubic root of 1388744796 is about 1115.6829979248.

The spelling of 1388744796 in words is "one billion, three hundred eighty-eight million, seven hundred forty-four thousand, seven hundred ninety-six".