18503162420 has 24 divisors (see below), whose sum is σ = 38859362304. Its totient is φ = 7400746656.

The previous prime is 18503162413. The next prime is 18503162449. The reversal of 18503162420 is 2426130581.

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, 403169 + ... + 446711.

It is an arithmetic number, because the mean of its divisors is an integer number (1619140096).

Almost surely, 2^18503162420 is an apocalyptic number.

18503162420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18503162420 is an abundant number, since it is smaller than the sum of its proper divisors (20356199884).

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

18503162420 is a wasteful number, since it uses less digits than its factorization.

18503162420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64799 (or 64797 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 18503162420 in words is "eighteen billion, five hundred three million, one hundred sixty-two thousand, four hundred twenty".