18538958030 has 16 divisors (see below), whose sum is σ = 33681996720. Its totient is φ = 7346278272.

The previous prime is 18538958023. The next prime is 18538958041. The reversal of 18538958030 is 3085983581.

It is a self number, because there is not a number n which added to its sum of digits gives 18538958030.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8661995 + ... + 8664134.

It is an arithmetic number, because the mean of its divisors is an integer number (2105124795).

Almost surely, 2^18538958030 is an apocalyptic number.

18538958030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18538958030 is a deficient number, since it is larger than the sum of its proper divisors (15143038690).

18538958030 is a wasteful number, since it uses less digits than its factorization.

18538958030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17326243.

The product of its (nonzero) digits is 1036800, while the sum is 50.

The spelling of 18538958030 in words is "eighteen billion, five hundred thirty-eight million, nine hundred fifty-eight thousand, thirty".