1838813616 has 80 divisors (see below), whose sum is σ = 5555894400. Its totient is φ = 580675392.

The previous prime is 1838813609. The next prime is 1838813617. The reversal of 1838813616 is 6163188381.

1838813616 is a `hidden beast` number, since 18 + 3 + 8 + 8 + 13 + 616 = 666.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1838813617) 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, 103806 + ... + 120221.

It is an arithmetic number, because the mean of its divisors is an integer number (69448680).

Almost surely, 2^1838813616 is an apocalyptic number.

1838813616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1838813616 is an abundant number, since it is smaller than the sum of its proper divisors (3717080784).

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

1838813616 is a wasteful number, since it uses less digits than its factorization.

1838813616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224063 (or 224051 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 1838813616 is about 42881.3900894082. The cubic root of 1838813616 is about 1225.1217129655.

The spelling of 1838813616 in words is "one billion, eight hundred thirty-eight million, eight hundred thirteen thousand, six hundred sixteen".