18837537040 has 40 divisors (see below), whose sum is σ = 50054028480. Its totient is φ = 6458583936.

The previous prime is 18837537007. The next prime is 18837537049. The reversal of 18837537040 is 4073573881.

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

It is not an unprimeable number, because it can be changed into a prime (18837537049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16818670 + ... + 16819789.

It is an arithmetic number, because the mean of its divisors is an integer number (1251350712).

Almost surely, 2^18837537040 is an apocalyptic number.

18837537040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18837537040 is an abundant number, since it is smaller than the sum of its proper divisors (31216491440).

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

18837537040 is a wasteful number, since it uses less digits than its factorization.

18837537040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33638479 (or 33638473 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 18837537040 in words is "eighteen billion, eight hundred thirty-seven million, five hundred thirty-seven thousand, forty".