1385903435536 has 15 divisors (see below), whose sum is σ = 2685197030023. Its totient is φ = 692949363280.

The previous prime is 1385903435491. The next prime is 1385903435561. The reversal of 1385903435536 is 6355343095831.

The square root of 1385903435536 is 1177244.

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 polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4561821 + ... + 4856131.

Almost surely, 2^{1385903435536} is an apocalyptic number.

1385903435536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1385903435536 is the 1177244-th square number.

It is an amenable number.

1385903435536 is a deficient number, since it is larger than the sum of its proper divisors (1299293594487).

1385903435536 is an frugal number, since it uses more digits than its factorization.

1385903435536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588630 (or 294313 counting only the distinct ones).

The product of its (nonzero) digits is 17496000, while the sum is 55.

The spelling of 1385903435536 in words is "one trillion, three hundred eighty-five billion, nine hundred three million, four hundred thirty-five thousand, five hundred thirty-six".