18950685988530 has 32 divisors (see below), whose sum is σ = 45486525478464. Its totient is φ = 5052974140736.

The previous prime is 18950685988463. The next prime is 18950685988567. The reversal of 18950685988530 is 3588958605981.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33598329 + ... + 34157708.

It is an arithmetic number, because the mean of its divisors is an integer number (1421453921202).

Almost surely, 2^{18950685988530} is an apocalyptic number.

18950685988530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18950685988530 is an abundant number, since it is smaller than the sum of its proper divisors (26535839489934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18950685988530 is a wasteful number, since it uses less digits than its factorization.

18950685988530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67765370.

The product of its (nonzero) digits is 746496000, while the sum is 75.

The spelling of 18950685988530 in words is "eighteen trillion, nine hundred fifty billion, six hundred eighty-five million, nine hundred eighty-eight thousand, five hundred thirty".