1850018668500 has 48 divisors (see below), whose sum is σ = 5387254367040. Its totient is φ = 493338311200.

The previous prime is 1850018668493. The next prime is 1850018668507. The reversal of 1850018668500 is 58668100581.

It is an interprime number because it is at equal distance from previous prime (1850018668493) and next prime (1850018668507).

It is a self number, because there is not a number n which added to its sum of digits gives 1850018668500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1850018668507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 616671390 + ... + 616674389.

It is an arithmetic number, because the mean of its divisors is an integer number (112234465980).

Almost surely, 2^{1850018668500} is an apocalyptic number.

1850018668500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1850018668500 is an abundant number, since it is smaller than the sum of its proper divisors (3537235698540).

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

1850018668500 is a wasteful number, since it uses less digits than its factorization.

1850018668500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233345801 (or 1233345789 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 48.

The spelling of 1850018668500 in words is "one trillion, eight hundred fifty billion, eighteen million, six hundred sixty-eight thousand, five hundred".