1538413843553 has 8 divisors (see below), whose sum is σ = 1542269390688. Its totient is φ = 1534560696064.

The previous prime is 1538413843511. The next prime is 1538413843613. The reversal of 1538413843553 is 3553483148351.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1538413843553 - 2³⁰ = 1537340101729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1538413843495 and 1538413843504.

It is not an unprimeable number, because it can be changed into a prime (1538413848553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687350 + ... + 1883952.

It is an arithmetic number, because the mean of its divisors is an integer number (192783673836).

Almost surely, 2^{1538413843553} is an apocalyptic number.

It is an amenable number.

1538413843553 is a deficient number, since it is larger than the sum of its proper divisors (3855547135).

1538413843553 is a wasteful number, since it uses less digits than its factorization.

1538413843553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199823.

The product of its digits is 10368000, while the sum is 53.

The spelling of 1538413843553 in words is "one trillion, five hundred thirty-eight billion, four hundred thirteen million, eight hundred forty-three thousand, five hundred fifty-three".