2018421388 has 24 divisors (see below), whose sum is σ = 3632504400. Its totient is φ = 980947968.

The previous prime is 2018421371. The next prime is 2018421409. The reversal of 2018421388 is 8831248102.

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, 27045 + ... + 69052.

It is an arithmetic number, because the mean of its divisors is an integer number (151354350).

Almost surely, 2^2018421388 is an apocalyptic number.

It is an amenable number.

2018421388 is a deficient number, since it is larger than the sum of its proper divisors (1614083012).

2018421388 is a wasteful number, since it uses less digits than its factorization.

2018421388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96249 (or 96247 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 2018421388 is about 44926.8448480416. The cubic root of 2018421388 is about 1263.7774829618. Note that the first 3 decimals are identical.

The spelling of 2018421388 in words is "two billion, eighteen million, four hundred twenty-one thousand, three hundred eighty-eight".