18703890761320 has 32 divisors (see below), whose sum is σ = 42492334360320. Its totient is φ = 7408919833920.

The previous prime is 18703890761299. The next prime is 18703890761383. The reversal of 18703890761320 is 2316709830781.

It is a happy number.

It is a super-2 number, since 2×18703890761320² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2269885536 + ... + 2269893775.

It is an arithmetic number, because the mean of its divisors is an integer number (1327885448760).

Almost surely, 2^{18703890761320} is an apocalyptic number.

18703890761320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18703890761320 is an abundant number, since it is smaller than the sum of its proper divisors (23788443599000).

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

18703890761320 is a wasteful number, since it uses less digits than its factorization.

18703890761320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4539779425 (or 4539779421 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 55.

The spelling of 18703890761320 in words is "eighteen trillion, seven hundred three billion, eight hundred ninety million, seven hundred sixty-one thousand, three hundred twenty".