2018193183640 has 64 divisors (see below), whose sum is σ = 4722696604800. Its totient is φ = 775516405248.

The previous prime is 2018193183623. The next prime is 2018193183689. The reversal of 2018193183640 is 463813918102.

It is a congruent 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, 8513739 + ... + 8747578.

It is an arithmetic number, because the mean of its divisors is an integer number (73792134450).

Almost surely, 2^{2018193183640} is an apocalyptic number.

2018193183640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2018193183640 is an abundant number, since it is smaller than the sum of its proper divisors (2704503421160).

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

2018193183640 is a wasteful number, since it uses less digits than its factorization.

2018193183640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17261444 (or 17261440 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 2018193183640 in words is "two trillion, eighteen billion, one hundred ninety-three million, one hundred eighty-three thousand, six hundred forty".