1388433309124 has 9 divisors (see below), whose sum is σ = 2429762415087. Its totient is φ = 694215476244.

The previous prime is 1388433309041. The next prime is 1388433309209. The reversal of 1388433309124 is 4219033348831.

The square root of 1388433309124 is 1178318.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2062057 + ... + 2651215.

Almost surely, 2^{1388433309124} is an apocalyptic number.

1388433309124 is the 1178318-th square number.

It is an amenable number.

1388433309124 is a deficient number, since it is larger than the sum of its proper divisors (1041329105963).

1388433309124 is an frugal number, since it uses more digits than its factorization.

1388433309124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178322 (or 589161 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 49.

Multiplying 1388433309124 by its sum of digits (49), we get a square (68033232147076 = 8248226²).

The spelling of 1388433309124 in words is "one trillion, three hundred eighty-eight billion, four hundred thirty-three million, three hundred nine thousand, one hundred twenty-four".