2018190172640 has 48 divisors (see below), whose sum is σ = 4802276309040. Its totient is φ = 801468318720.

The previous prime is 2018190172627. The next prime is 2018190172729. The reversal of 2018190172640 is 462710918102.

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, 45350741 + ... + 45395220.

It is an arithmetic number, because the mean of its divisors is an integer number (100047423105).

Almost surely, 2^{2018190172640} is an apocalyptic number.

2018190172640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2018190172640 is an abundant number, since it is smaller than the sum of its proper divisors (2784086136400).

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

2018190172640 is a wasteful number, since it uses less digits than its factorization.

2018190172640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90746115 (or 90746107 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The spelling of 2018190172640 in words is "two trillion, eighteen billion, one hundred ninety million, one hundred seventy-two thousand, six hundred forty".