18706835740 has 24 divisors (see below), whose sum is σ = 39534580512. Its totient is φ = 7435072320.

The previous prime is 18706835723. The next prime is 18706835743. The reversal of 18706835740 is 4753860781.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18706835743) 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, 2975656 + ... + 2981935.

It is an arithmetic number, because the mean of its divisors is an integer number (1647274188).

Almost surely, 2^18706835740 is an apocalyptic number.

18706835740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18706835740 is an abundant number, since it is smaller than the sum of its proper divisors (20827744772).

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

18706835740 is a wasteful number, since it uses less digits than its factorization.

18706835740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5957757 (or 5957755 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 18706835740 in words is "eighteen billion, seven hundred six million, eight hundred thirty-five thousand, seven hundred forty".