18203040350 has 144 divisors (see below), whose sum is σ = 38985504768. Its totient is φ = 6310920000.

The previous prime is 18203040347. The next prime is 18203040353. The reversal of 18203040350 is 5304030281.

It is an interprime number because it is at equal distance from previous prime (18203040347) and next prime (18203040353).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18203040353) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 13315367 + ... + 13316733.

It is an arithmetic number, because the mean of its divisors is an integer number (270732672).

Almost surely, 2^18203040350 is an apocalyptic number.

18203040350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18203040350 is an abundant number, since it is smaller than the sum of its proper divisors (20782464418).

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

18203040350 is a wasteful number, since it uses less digits than its factorization.

18203040350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503 (or 1487 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 18203040350 in words is "eighteen billion, two hundred three million, forty thousand, three hundred fifty".