2018465840 has 40 divisors (see below), whose sum is σ = 4713649200. Its totient is φ = 803822336.

The previous prime is 2018465837. The next prime is 2018465849. The reversal of 2018465840 is 485648102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 2018465794 and 2018465803.

It is not an unprimeable number, because it can be changed into a prime (2018465849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37415 + ... + 73734.

It is an arithmetic number, because the mean of its divisors is an integer number (117841230).

Almost surely, 2^2018465840 is an apocalyptic number.

2018465840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2018465840 is an abundant number, since it is smaller than the sum of its proper divisors (2695183360).

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

2018465840 is a wasteful number, since it uses less digits than its factorization.

2018465840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111389 (or 111383 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 2018465840 is about 44927.3395606729. The cubic root of 2018465840 is about 1263.7867603480.

The spelling of 2018465840 in words is "two billion, eighteen million, four hundred sixty-five thousand, eight hundred forty".