13538615630 has 16 divisors (see below), whose sum is σ = 24733233360. Its totient is φ = 5334618432.

The previous prime is 13538615611. The next prime is 13538615689. The reversal of 13538615630 is 3651683531.

It is a super-2 number, since 2×13538615630² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 10102775 + ... + 10104114.

It is an arithmetic number, because the mean of its divisors is an integer number (1545827085).

Almost surely, 2^13538615630 is an apocalyptic number.

13538615630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13538615630 is a deficient number, since it is larger than the sum of its proper divisors (11194617730).

13538615630 is a wasteful number, since it uses less digits than its factorization.

13538615630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20206963.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 13538615630 in words is "thirteen billion, five hundred thirty-eight million, six hundred fifteen thousand, six hundred thirty".