1513538538823 has 8 divisors (see below), whose sum is σ = 1576963883520. Its totient is φ = 1451025789240.

The previous prime is 1513538538817. The next prime is 1513538538833. The reversal of 1513538538823 is 3288358353151.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1513538538823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1513538538833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228145393 + ... + 228152026.

It is an arithmetic number, because the mean of its divisors is an integer number (197120485440).

Almost surely, 2^{1513538538823} is an apocalyptic number.

1513538538823 is a deficient number, since it is larger than the sum of its proper divisors (63425344697).

1513538538823 is a wasteful number, since it uses less digits than its factorization.

1513538538823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456297557.

The product of its digits is 10368000, while the sum is 55.

The spelling of 1513538538823 in words is "one trillion, five hundred thirteen billion, five hundred thirty-eight million, five hundred thirty-eight thousand, eight hundred twenty-three".