18835040520 has 96 divisors (see below), whose sum is σ = 64814719320. Its totient is φ = 4727224320.

The previous prime is 18835040507. The next prime is 18835040551. The reversal of 18835040520 is 2504053881.

It is a happy number.

18835040520 is a `hidden beast` number, since 1 + 8 + 83 + 50 + 4 + 0 + 520 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 11595413124 + 7239627396 = 107682^2 + 85086^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1532691 + ... + 1544930.

Almost surely, 2^18835040520 is an apocalyptic number.

18835040520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18835040520 is an abundant number, since it is smaller than the sum of its proper divisors (45979678800).

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

18835040520 is a wasteful number, since it uses less digits than its factorization.

18835040520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3077655 (or 3077648 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

It can be divided in two parts, 18 and 835040520, that added together give a palindrome (835040538).

The spelling of 18835040520 in words is "eighteen billion, eight hundred thirty-five million, forty thousand, five hundred twenty".